When two boats share the same hull type — in this case both the Stamas 310 Express Outboard 2010 and the Stamas 370 Express Inboard 2009 are modified vee designs with fiberglass 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 Stamas 370 Express Inboard 2009 measures 39,0 feet overall (2009), giving it roughly 6,5 additional feet of deck space compared to the Stamas 310 Express Outboard 2010 at 32,5 feet (2010). Weight tells a clearer story for trailering families: the Stamas 370 Express Inboard 2009 tips the scales at 2 113 lbs — 2 015 lbs less than the Stamas 310 Express Outboard 2010 at 98 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 Stamas 310 Express Outboard 2010 carries a rated maximum of 500 hp. Engine data for the Stamas 370 Express Inboard 2009 wasn't available in our records — check the manufacturer's spec sheet before sizing a motor.Both carry nearly identical fuel loads — 3 gal and 4 gal — so range won't be a tiebreaker here.

For family outings this is probably the sharpest distinction between the two. The Stamas 370 Express Inboard 2009 is rated for 11 passengers, while the Stamas 310 Express Outboard 2010 caps at 9. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Stamas 370 Express Inboard 2009 could be the deciding factor.