When two boats share the same hull type — in this case both the Larson LX 620 O/B 2012 and the Larson LXi 258 I/O 2012 are modified vee designs with composite 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 LXi 258 I/O 2012 measures 25,5 feet overall (2012), giving it roughly 9,3 additional feet of deck space compared to the Larson LX 620 O/B 2012 at 16,2 feet (2012). Weight tells a clearer story for trailering families: the Larson LXi 258 I/O 2012 tips the scales at 475 lbs — 360 lbs less than the Larson LX 620 O/B 2012 at 115 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 90 hp, the Larson LX 620 O/B 2012 has a 87-hp advantage over the Larson LXi 258 I/O 2012's 3-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 258 I/O 2012 carries 56 gallons versus 19 gallons in the Larson LX 620 O/B 2012. 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 I/O 2012 is rated for 12 passengers, while the Larson LX 620 O/B 2012 caps at 6. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Larson LXi 258 I/O 2012 could be the deciding factor.