Both the Larson 310 Cabrio 2010 and the Larson LX 860 SF O/B 2012 are modified-V designs, the first built in fibreglass and the second in composite, so 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 310 Cabrio 2010 measures 31,0 feet overall (2010), giving it roughly 12,5 additional feet of deck space compared to the Larson LX 860 SF O/B 2012 at 18,5 feet (2012). Weight tells a clearer story for trailering families: the Larson 310 Cabrio 2010 tips the scales at 10 400 lbs - 8 620 lbs more than the Larson LX 860 SF O/B 2012 at 1 780 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 310 Cabrio 2010 has a 170-hp advantage over the Larson LX 860 SF O/B 2012's 150-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 310 Cabrio 2010 carries 160 gallons versus 30 gallons in the Larson LX 860 SF O/B 2012. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.