The Sea Ray 290 Select EX 2007 vs Sea Ray 310 Sundancer 2009 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 2009 measures 33,3 feet overall (2009), giving it roughly 4,3 additional feet of deck space compared to the Sea Ray 290 Select EX 2007 at 29,0 feet (2007). At 77 lbs and 14 lbs respectively, both sit in a similar weight class — either should pair comfortably with most mid-size SUVs and half-ton trucks, though always confirm your specific tow rating with the motor added.

The power gap is worth calling out. Rated to 375 hp, the Sea Ray 290 Select EX 2007 has a 55-hp advantage over the Sea Ray 310 Sundancer 2009's 320-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 290 Select EX 2007 carries 13 gallons versus 2 gallons in the Sea Ray 310 Sundancer 2009. 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 2009 is rated for 10 passengers, while the Sea Ray 290 Select EX 2007 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 2009 could be the deciding factor.