Both the Supra SA450 2013 and the Supra Sunsport 20 V 2008 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 SA450 2013 at 22,5 ft versus Supra Sunsport 20 V 2008 at 20,0 ft. Weight tells a clearer story for trailering families: the Supra SA450 2013 tips the scales at 4 300 lbs - 1 100 lbs more than the Supra Sunsport 20 V 2008 at 3 200 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.
The power gap is worth calling out. Rated to 450 hp, the Supra SA450 2013 has a 110-hp advantage over the Supra Sunsport 20 V 2008's 340-hp ceiling - enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the Supra SA450 2013 carries 50 gallons versus 40 gallons in the Supra Sunsport 20 V 2008. 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 Supra SA450 2013 is rated for 13 passengers, while the Supra Sunsport 20 V 2008 caps at 10. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Supra SA450 2013 could be the deciding factor.
Bottom line: Choose the Supra SA450 2013 if your priority is putting more people on the water - it handles 13 passengers and at 22,5 ft it has the deck room to back that rating up comfortably. The Supra Sunsport 20 V 2008 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 10 that costs less to run day-to-day.