The Maxum 2100 SD 2007 vs Maxum 3700 SY 2007 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 2007 measures 37,0 feet overall (2007), giving it roughly 16,0 additional feet of deck space compared to the Maxum 2100 SD 2007 at 21,0 feet (2007). Weight tells a clearer story for trailering families: the Maxum 2100 SD 2007 tips the scales at 3 953 lbs — 2 021 lbs more than the Maxum 3700 SY 2007 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 2007 has a 120-hp advantage over the Maxum 2100 SD 2007's 300-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 2100 SD 2007 carries 55 gallons versus 3 gallons in the Maxum 3700 SY 2007. 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 2007 is rated for 11 passengers, while the Maxum 2100 SD 2007 caps at 6. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Maxum 3700 SY 2007 could be the deciding factor.