The Sea Ray 250 Select EX 2006 vs Sea Ray 310 Sundancer 2011 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 Sea Ray 310 Sundancer 2011 measures 31,0 feet overall (2011), giving it roughly 5,0 additional feet of deck space compared to the Sea Ray 250 Select EX 2006 at 26,0 feet (2006). Weight tells a clearer story for trailering families: the Sea Ray 310 Sundancer 2011 tips the scales at 11 630 lbs - 6 580 lbs less than the Sea Ray 250 Select EX 2006 at 5 050 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 425 hp, the Sea Ray 250 Select EX 2006 has a 125-hp advantage over the Sea Ray 310 Sundancer 2011'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 Sea Ray 310 Sundancer 2011 carries 125 gallons versus 75 gallons in the Sea Ray 250 Select EX 2006. 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 Sea Ray 310 Sundancer 2011 is rated for 9 passengers, while the Sea Ray 250 Select EX 2006 caps at 8. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Sea Ray 310 Sundancer 2011 could be the deciding factor.