The Sea Ray Sundancer 240 2007 vs Sea Ray Sundeck 220 2010 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.
Both boats share a closely matched power ceiling - 260 hp for the Sea Ray Sundancer 240 2007 and 260 hp for the Sea Ray Sundeck 220 2010. Real-world performance will come down more to which motor is actually bolted on, its load at the time, and whether it's a 4-stroke or 2-stroke setup. Fuel capacity breaks the other way: the Sea Ray Sundancer 240 2007 carries 69 gallons versus 50 gallons in the Sea Ray Sundeck 220 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 Sundancer 240 2007 is rated for 7 passengers, while the Sea Ray Sundeck 220 2010 caps at 6. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Sea Ray Sundancer 240 2007 could be the deciding factor.
Bottom line: Choose the Sea Ray Sundancer 240 2007 if your priority is putting more people on the water - it handles 7 passengers and at 26,0 ft it has the deck room to back that rating up comfortably. The Sea Ray Sundeck 220 2010 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 6 that costs less to run day-to-day.