The Supra Launch 21 V 2006 vs Supra Sunsport 24 V 2009 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.
On paper these two are close siblings in the size department - Supra Launch 21 V 2006 at 21,0 ft versus Supra Sunsport 24 V 2009 at 24,0 ft. Weight tells a clearer story for trailering families: the Supra Sunsport 24 V 2009 tips the scales at 3 950 lbs - 550 lbs less than the Supra Launch 21 V 2006 at 3 400 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.
Both boats share a closely matched power ceiling - 340 hp for the Supra Launch 21 V 2006 and 325 hp for the Supra Sunsport 24 V 2009. 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.
For family outings this is probably the sharpest distinction between the two. The Supra Sunsport 24 V 2009 is rated for 16 passengers, while the Supra Launch 21 V 2006 caps at 13. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Supra Sunsport 24 V 2009 could be the deciding factor.
Bottom line: Choose the Supra Sunsport 24 V 2009 if your priority is putting more people on the water - it handles 16 passengers and at 24,0 ft it has the deck room to back that rating up comfortably. The Supra Launch 21 V 2006 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 13 that costs less to run day-to-day.