The Maxum 3100 SE 2007 vs Maxum 3700 SY 2009 comparison sits squarely in the category of decisions where specs alone won't tell the whole story — intended use, storage, and long-term ownership costs all factor in.

Size is the most obvious dividing line here. The Maxum 3700 SY 2009 measures 37,0 feet overall (2009), giving it roughly 34,0 additional feet of deck space compared to the Maxum 3100 SE 2007 at 3,0 feet (2007). Weight tells a clearer story for trailering families: the Maxum 3100 SE 2007 tips the scales at 10 765 lbs — 8 833 lbs more than the Maxum 3700 SY 2009 at 1 932 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 420 hp, the Maxum 3700 SY 2009 has a 160-hp advantage over the Maxum 3100 SE 2007's 260-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the Maxum 3100 SE 2007 carries 15 gallons versus 3 gallons in the Maxum 3700 SY 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 Maxum 3700 SY 2009 is rated for 11 passengers, while the Maxum 3100 SE 2007 caps at 9. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Maxum 3700 SY 2009 could be the deciding factor.