When two boats share the same hull type — in this case both the Sea Ray 240 Sundancer 2009 and the Sea Ray 270 Select EX 2010 are modified vee designs with fiberglass construction — the buying decision usually comes down to a handful of practical questions: how many people are you putting on the water, how far do you trailer, and what does your tow vehicle weigh?

Size is the most obvious dividing line here. The Sea Ray 270 Select EX 2010 measures 28,5 feet overall (2010), giving it roughly 3,7 additional feet of deck space compared to the Sea Ray 240 Sundancer 2009 at 24,8 feet (2009). At 5 593 lbs and 5 555 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 425 hp, the Sea Ray 270 Select EX 2010 has a 125-hp advantage over the Sea Ray 240 Sundancer 2009'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 270 Select EX 2010 carries 91 gallons versus 75 gallons in the Sea Ray 240 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 270 Select EX 2010 is rated for 8 passengers, while the Sea Ray 240 Sundancer 2009 caps at 7. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Sea Ray 270 Select EX 2010 could be the deciding factor.