Both the Stamas 310 Express Outboard 2009 and the Stamas 340 Tarpon Outboard 2007 are modified-V designs, both built in fibreglass, so 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?

On paper these two are close siblings in the size department - Stamas 310 Express Outboard 2009 at 32,0 ft versus Stamas 340 Tarpon Outboard 2007 at 34,0 ft. Weight tells a clearer story for trailering families: the Stamas 340 Tarpon Outboard 2007 tips the scales at 14 000 lbs - 4 200 lbs less than the Stamas 310 Express Outboard 2009 at 9 800 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 2009 carries a rated maximum of 500 hp. Engine data for the Stamas 340 Tarpon Outboard 2007 wasn't available in our records - check the manufacturer's spec sheet before sizing a motor.

For family outings this is probably the sharpest distinction between the two. The Stamas 340 Tarpon Outboard 2007 is rated for 10 passengers, while the Stamas 310 Express Outboard 2009 caps at 9. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Stamas 340 Tarpon Outboard 2007 could be the deciding factor.