Buy the Winfield 3 DLX if the bag goes in the cabin. Samsonite publishes it at 22.25 x 14.5 x 9.5 in overall — over the 22 x 14 x 9 in US template on all three axes, but by a quarter inch, half an inch and half an inch respectively, which is the smallest overage of any Samsonite polycarbonate carry-on we have figures for. Buy the Omni PC if the bag gets checked, or if price is the deciding factor. Samsonite publishes it at 22 x 15 x 9.5 in and 47.25 L — a full inch over on width, which is the dimension a rigid gate sizer catches first, and that extra inch is exactly where the extra volume lives.
That is the whole comparison in two sentences, and it is worth saying why so bluntly, because almost everything else about these two bags is the same. Both are Samsonite. Both are polycarbonate rather than ABS or a blend. Both carry the same 10-year limited warranty against defects in materials and workmanship, serviced through the same repair network — the largest in the category. Published empty weights are 6.81 lb (Omni PC) and 6.97 lb (Winfield 3 DLX), which is 0.16 lb apart: two and a half ounces, or about one folded shirt. Anyone telling you one of these is the lightweight choice is reading a different spec sheet.
So the decision is not material, not warranty, not weight and not service. It is dimensions and finish, and this page is about those.
The published figures, side by side
| Spec | Samsonite Omni PC carry-on | Samsonite Winfield 3 DLX carry-on |
|---|
| Published overall dimensions | 22 x 15 x 9.5 in | 22.25 x 14.5 x 9.5 in |
| Published body dimensions | Not published in the sources we could read | 20.0 x 14.25 x 9.5 in |
| Overage vs 22 x 14 x 9 in | At the height limit, +1 in width, +0.5 in depth | +0.25 in height, +0.5 in width, +0.5 in depth |
| Published empty weight | 6.81 lb | 6.97 lb |
| Published capacity | 47.25 L | Samsonite publishes no liter figure for this case |
| Shell | Micro-diamond textured polycarbonate | 100% polycarbonate, scratch-resistant brushed finish |
| Expansion | Expandable; Samsonite publishes no inch figure we could read | 1.5 in |
| Wheels | Four dual spinner casters | Four oversized dual spinner casters |
| Lock | Side-mounted TSA-approved combination lock | Mounted 3-digit TSA-approved combination lock |
| Interior | Full-length lid pocket and cross straps | Four-pocket, two-sided divider panel |
| Warranty | 10-year limited | 10-year limited, first purchaser or gift recipient |
| Price bracket | The cheapest real polycarbonate Samsonite | A step up, still mid-market |
The dimension that decides it
Both bags are sold as "20-inch" carry-ons and neither of them is 20 inches. That is the normal state of affairs in this category — the retail label is usually the case body, and the airline measures the overall figure with wheels and handles fitted — and we have made the point on both bags individually, in the Omni PC review and the Winfield 3 DLX review, and the clearest example on the site is actually a Travelpro — the Maxlite Air V2 is sold under three different heights at once. What matters here is that the two Samsonites go over the template in different places.
A US gate sizer is a rigid box: 22 inches tall, 14 wide, 9 deep. Height is the dimension you can cheat, because a bag goes into the box wheels-first and a quarter inch of soft telescoping handle at the top compresses or clears. Width is the dimension you cannot cheat, because a hard shell does not narrow and the walls of the box do not move. On that reading, the Omni PC's extra inch of width is the more consequential overage and the Winfield 3 DLX's quarter inch of height is the least consequential one. Both are over on depth by the same half inch, and in practice both clear most US overhead bins and most US sizer checks, which is why both bags sell in enormous numbers and neither has a reputation for being stopped.
Internationally, neither works, and it is worth being blunt about it because the gap is not marginal. Several European carriers gauge a cabin bag at roughly 55 x 40 x 20 cm and enforce it with a rigid frame at the gate. The Omni PC converts to about 55.9 x 38.1 x 24.1 cm and the Winfield 3 DLX to about 56.5 x 36.8 x 24.1 cm. Both are over on height and both are about 4 cm over on depth, which is not a rounding error on a frame. If you fly European budget carriers, our international carry-on page and international carry-on size are the right places to start instead.
The capacity trade, and the figure Samsonite does not publish
Here is the part that makes the comparison interesting rather than arbitrary. Samsonite publishes 47.25 L for the Omni PC and no liter figure at all for the Winfield 3 DLX. We will not invent one, so a direct volume comparison is not available — but the geometry tells you which direction it runs, because the Omni PC's extra half inch of width is the extra volume. The bag that fits a sizer worse holds more. That is not a flaw in either design; it is the same trade, made twice, in opposite directions.
So if the honest question is "which holds more," the answer on published geometry is the Omni PC, and the cost of that is the inch of width. If the honest question is "which clears a gate more often," the answer is the Winfield 3 DLX, and the cost of that is some volume Samsonite declines to quantify. Our how many outfits fit in a carry-on guide works the arithmetic from case dimensions rather than from a maker's liter claim, which is the better route when one of the two numbers does not exist.
Finish: textured versus brushed
Both bags are solving the same problem — a gloss hardside looks superb in a product photo and acquires visible scuffs on the first trip — and they solve it differently.
The Omni PC uses a micro-diamond texture: a pattern molded into the shell that breaks up light so scratches do not read as lines. The Winfield 3 DLX uses a scratch-resistant brushed finish: a directional surface that hides wear the way brushed aluminum does on an appliance. Both work, neither is a coating that can wear off, and which one you prefer is a matter of taste rather than engineering. The practical difference is that the Omni PC's texture is the more aggressive of the two and does the better job on deeper scuffs, which is part of why the older, cheaper bag often looks newer after a year than the dearer one.
On the inside, the Winfield 3 DLX has the better-documented organization: Samsonite publishes a four-pocket, two-sided divider panel, which means a packed bag stays packed when it is opened flat on a hotel bed. The Omni PC is a simpler box with a lid pocket and cross straps. If you pack in cubes neither matters much; if you pack loose, the divider panel does.
Which generation are you actually looking at?
Both lines have been through versions, and the search results mix them up, so it is worth disentangling before you buy.
Omni PC is the long-running original, and it is the one we have published figures for and the one ranked below. Omni 2 and Omni 2 Pro are the newer generation, sold largely as Amazon-exclusive configurations including the two-piece set ranked below. We deliberately did not put the Omni 2 Pro carry-on in the buy rows on this page: when we checked stock in this run its listing returned "Only 1 left in stock," and this site does not feature a product it cannot confirm is comfortably purchasable.
Winfield 3 DLX is the current version of the Winfield line and the DLX is the trim level — the brushed finish, the divider panel and the mounted lock belong to it. A listing that says only "Winfield 3," or "Winfield 2," is an older or lower-trim bag and the published figures on this page should not be assumed to apply to it. The other Samsonite carry-on people put in this conversation is the Freeform, which is polypropylene rather than polycarbonate and therefore a different argument entirely — set out in polypropylene vs polycarbonate.
The verdict
Winfield 3 DLX for most buyers. It is the closer published fit on the dimension that is hardest to cheat, it publishes its expansion figure, it has the better interior, and the brushed finish is the more grown-up look. It is the bag this site recommends more often than any other hardside carry-on, and our hardside carry-on page ranks it accordingly.
Omni PC when the price is the point, or when the bag is going in the hold anyway. It is the cheapest genuinely polycarbonate case Samsonite sells, it publishes more volume, it hides scuffs better, and it carries the identical 10-year warranty. On a cost-per-trip basis it is very hard to beat, which is the case our budget carry-on page makes.
Neither if you fly European low-cost carriers regularly. Both are about 4 cm too deep for a 20 cm gauge and this is not a problem you can pack your way out of.
Every figure above is a published one, cited in Sources, and the two bags' own review pages on this site carry the full specification tables. We have not weighed or packed either case. Samsonite publishes no liter capacity for the Winfield 3 DLX and we have not estimated one. See how we test.
