The Sea Ray 290 Select EX 2006 vs Sea Ray Sundancer 400 1999 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 Sundancer 400 1999 measures 40,0 feet overall (1999), giving it roughly 11,0 additional feet of deck space compared to the Sea Ray 290 Select EX 2006 at 29,0 feet (2006). Weight tells a clearer story for trailering families: the Sea Ray Sundancer 400 1999 tips the scales at 22 500 lbs — 22 423 lbs less than the Sea Ray 290 Select EX 2006 at 77 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 290 Select EX 2006 has a 42-hp advantage over the Sea Ray Sundancer 400 1999's 383-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 Sundancer 400 1999 carries 335 gallons versus 13 gallons in the Sea Ray 290 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 Sundancer 400 1999 is rated for 12 passengers, while the Sea Ray 290 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 Sundancer 400 1999 could be the deciding factor.