The Larson 186 Senza 2010 is a modified-V design and the Larson LXi 258 2013 is a deep-V design, so you're likely deciding between two noticeably different on-water experiences. Hull type shapes everything from ride quality and fuel burn to dock handling and resale trajectory.
Size is the most obvious dividing line here. The Larson LXi 258 2013 measures 25,5 feet overall (2013), giving it roughly 7,0 additional feet of deck space compared to the Larson 186 Senza 2010 at 18,5 feet (2010). Weight tells a clearer story for trailering families: the Larson LXi 258 2013 tips the scales at 4 750 lbs - 2 050 lbs less than the Larson 186 Senza 2010 at 2 700 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 Larson 186 Senza 2010 carries a rated maximum of 270 hp. Engine data for the Larson LXi 258 2013 wasn't available in our records - check the manufacturer's spec sheet before sizing a motor.Fuel capacity breaks the other way: the Larson LXi 258 2013 carries 57 gallons versus 29 gallons in the Larson 186 Senza 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 258 2013 is rated for 12 passengers, while the Larson 186 Senza 2010 caps at 9. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Larson LXi 258 2013 could be the deciding factor.
Bottom line: Choose the Larson LXi 258 2013 if your priority is putting more people on the water - it handles 12 passengers and at 25,5 ft it has the deck room to back that rating up comfortably. The Larson 186 Senza 2010 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 9 that costs less to run day-to-day.