The Sea Ray 390 Sedan Bridge 2010 vs Sea Ray 55 Sundancer 2007 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 390 Sedan Bridge 2010 measures 38,3 feet overall (2010), giving it roughly 32,3 additional feet of deck space compared to the Sea Ray 55 Sundancer 2007 at 6,0 feet (2007). At 22 lbs and 53 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 861 hp, the Sea Ray 55 Sundancer 2007 has a 491-hp advantage over the Sea Ray 390 Sedan Bridge 2010's 370-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 55 Sundancer 2007 carries 825 gallons versus 3 gallons in the Sea Ray 390 Sedan Bridge 2010. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.

The Sea Ray 390 Sedan Bridge 2010 is rated for up to 11 people. Passenger data for the Sea Ray 55 Sundancer 2007 wasn't available.