The Stamas 310 Express Outboard 2007 is a modified-V design and the Stamas 317 Tarpon Outboard 2012 is a deep-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 - Stamas 310 Express Outboard 2007 at 32,0 ft versus Stamas 317 Tarpon Outboard 2012 at 31,6 ft. Weight tells a clearer story for trailering families: the Stamas 310 Express Outboard 2007 tips the scales at 9 800 lbs - 3 500 lbs more than the Stamas 317 Tarpon Outboard 2012 at 6 300 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.

Both boats share a closely matched power ceiling - 500 hp for the Stamas 310 Express Outboard 2007 and 500 hp for the Stamas 317 Tarpon Outboard 2012. Real-world performance will come down more to which motor is actually bolted on, its load at the time, and whether it's a 4-stroke or 2-stroke setup. Both carry nearly identical fuel loads - 300 gal and 302 gal - so range won't be a tiebreaker here.

For family outings this is probably the sharpest distinction between the two. The Stamas 317 Tarpon Outboard 2012 is rated for 10 passengers, while the Stamas 310 Express Outboard 2007 caps at 9. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Stamas 317 Tarpon Outboard 2012 could be the deciding factor.