The Larson FX 1850 DC O/B 2013 is a deep-V design and the Larson SEi 180 LX 2009 is a modified-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.

On paper these two are close siblings in the size department - Larson FX 1850 DC O/B 2013 at 18,5 ft versus Larson SEi 180 LX 2009 at 17,0 ft. Weight tells a clearer story for trailering families: the Larson SEi 180 LX 2009 tips the scales at 2 365 lbs - 146 lbs less than the Larson FX 1850 DC O/B 2013 at 2 219 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 FX 1850 DC O/B 2013 carries a rated maximum of 175 hp. Engine data for the Larson SEi 180 LX 2009 wasn't available in our records - check the manufacturer's spec sheet before sizing a motor.Fuel capacity breaks the other way: the Larson FX 1850 DC O/B 2013 carries 30 gallons versus 23 gallons in the Larson SEi 180 LX 2009. 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 SEi 180 LX 2009 is rated for 8 passengers, while the Larson FX 1850 DC O/B 2013 caps at 7. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Larson SEi 180 LX 2009 could be the deciding factor.