The Stamas 320 Express Outboard 2009 vs Stamas Yacht 390 Aegean 2015 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.

The Stamas Yacht 390 Aegean 2015 tops out at 300 hp. Engine specs for the Stamas 320 Express Outboard 2009 aren't listed — confirm with a dealer before selecting an outboard.Fuel capacity breaks the other way: the Stamas 320 Express Outboard 2009 carries 316 gallons versus 41 gallons in the Stamas Yacht 390 Aegean 2015. 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 Stamas Yacht 390 Aegean 2015 is rated for 11 passengers, while the Stamas 320 Express Outboard 2009 caps at 10. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Stamas Yacht 390 Aegean 2015 could be the deciding factor.