The Four Winns H310 2009 vs Four Winns H350 OB 2021 comparison sits squarely in the category of decisions where specs alone won't tell the whole story — intended use, storage, and long-term ownership costs all factor in.

Size is the most obvious dividing line here. The Four Winns H350 OB 2021 measures 35,0 feet overall (2021), giving it roughly 4,0 additional feet of deck space compared to the Four Winns H310 2009 at 31,0 feet (2009). Weight tells a clearer story for trailering families: the Four Winns H350 OB 2021 tips the scales at 13 300 lbs — 12 464 lbs less than the Four Winns H310 2009 at 836 lbs. That difference is meaningful if you're working within a half-ton or three-quarter-ton truck's tow rating, especially once you factor in a motor, gear, and fuel.

The power gap is worth calling out. Rated to 800 hp, the Four Winns H350 OB 2021 has a 480-hp advantage over the Four Winns H310 2009's 320-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the Four Winns H350 OB 2021 carries 17 gallons versus 13 gallons in the Four Winns H310 2009. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.

For family outings this is probably the sharpest distinction between the two. The Four Winns H310 2009 is rated for 14 passengers, while the Four Winns H350 OB 2021 caps at 10. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Four Winns H310 2009 could be the deciding factor.