When two boats share the same hull type — in this case both the Larson Cabrio 310 2011 and the Larson FX 1750 TL O/B 2013 are deep vee designs with fiberglass construction — the buying decision usually comes down to a handful of practical questions: how many people are you putting on the water, how far do you trailer, and what does your tow vehicle weigh?

Size is the most obvious dividing line here. The Larson Cabrio 310 2011 measures 31,0 feet overall (2011), giving it roughly 13,6 additional feet of deck space compared to the Larson FX 1750 TL O/B 2013 at 17,4 feet (2013). Weight tells a clearer story for trailering families: the Larson FX 1750 TL O/B 2013 tips the scales at 1 972 lbs — 1 868 lbs less than the Larson Cabrio 310 2011 at 104 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 320 hp, the Larson Cabrio 310 2011 has a 230-hp advantage over the Larson FX 1750 TL O/B 2013's 90-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the Larson FX 1750 TL O/B 2013 carries 22 gallons versus 16 gallons in the Larson Cabrio 310 2011. 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 Larson Cabrio 310 2011 is rated for 9 passengers, while the Larson FX 1750 TL O/B 2013 caps at 6. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Larson Cabrio 310 2011 could be the deciding factor.