Both the Supra Launch Gravity 24 SSV 2009 and the Supra Sunsport 21V 2010 are modified-V designs, both built in fibreglass, so 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?
On paper these two are close siblings in the size department - Supra Launch Gravity 24 SSV 2009 at 24,0 ft versus Supra Sunsport 21V 2010 at 21,3 ft. Weight tells a clearer story for trailering families: the Supra Launch Gravity 24 SSV 2009 tips the scales at 3 950 lbs - 150 lbs more than the Supra Sunsport 21V 2010 at 3 800 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 Gravity 24 SSV 2009 and 325 hp for the Supra Sunsport 21V 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. Both carry nearly identical fuel loads - 52 gal and 52 gal - so range won't be a tiebreaker here.
For family outings this is probably the sharpest distinction between the two. The Supra Launch Gravity 24 SSV 2009 is rated for 16 passengers, while the Supra Sunsport 21V 2010 caps at 14. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Supra Launch Gravity 24 SSV 2009 could be the deciding factor.
Bottom line: Choose the Supra Launch Gravity 24 SSV 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 Sunsport 21V 2010 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 14 that costs less to run day-to-day.