The Sea Ray 300 Select EX 2010 vs Sea Ray 340 Sundancer 2005 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 340 Sundancer 2005 measures 37,0 feet overall (2005), giving it roughly 7,5 additional feet of deck space compared to the Sea Ray 300 Select EX 2010 at 29,5 feet (2010). At 77 lbs and 146 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 Sea Ray 300 Select EX 2010 carries a rated maximum of 300 hp. Engine data for the Sea Ray 340 Sundancer 2005 wasn't available in our records — check the manufacturer's spec sheet before sizing a motor.Fuel capacity breaks the other way: the Sea Ray 340 Sundancer 2005 carries 225 gallons versus 13 gallons in the Sea Ray 300 Select EX 2010. 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 340 Sundancer 2005 is rated for 11 passengers, while the Sea Ray 300 Select EX 2010 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 340 Sundancer 2005 could be the deciding factor.