Both the Larson 1850 LX 2010 and the Larson LXi 288 I/O 2011 are modified-V designs, both built in fibreglass, 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 LXi 288 I/O 2011 measures 29,2 feet overall (2011), giving it roughly 10,3 additional feet of deck space compared to the Larson 1850 LX 2010 at 18,8 feet (2010). Weight tells a clearer story for trailering families: the Larson LXi 288 I/O 2011 tips the scales at 5 970 lbs - 3 595 lbs less than the Larson 1850 LX 2010 at 2 375 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 430 hp, the Larson LXi 288 I/O 2011 has a 240-hp advantage over the Larson 1850 LX 2010's 190-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 LXi 288 I/O 2011 carries 100 gallons versus 23 gallons in the Larson 1850 LX 2010. 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 LXi 288 I/O 2011 is rated for 8 passengers, while the Larson 1850 LX 2010 caps at 7. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Larson LXi 288 I/O 2011 could be the deciding factor.
Bottom line: Choose the Larson LXi 288 I/O 2011 if your priority is putting more people on the water - it handles 8 passengers and at 29,2 ft it has the deck room to back that rating up comfortably. The Larson 1850 LX 2010 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 7 that costs less to run day-to-day.