The Sunsation 288 SS 2010 is a modified-V design and the Sunsation 32 XRT Mid-Cabin Open Bow 2013 is a deep-V design, so you're likely deciding between two noticeably different on-water experiences. Hull type shapes everything from ride quality and fuel burn to dock handling and resale trajectory.
On paper these two are close siblings in the size department - Sunsation 288 SS 2010 at 28,7 ft versus Sunsation 32 XRT Mid-Cabin Open Bow 2013 at 31,6 ft. Weight tells a clearer story for trailering families: the Sunsation 32 XRT Mid-Cabin Open Bow 2013 tips the scales at 7 200 lbs - 2 700 lbs less than the Sunsation 288 SS 2010 at 4 500 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.
For family outings this is probably the sharpest distinction between the two. The Sunsation 32 XRT Mid-Cabin Open Bow 2013 is rated for 9 passengers, while the Sunsation 288 SS 2010 caps at 8. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Sunsation 32 XRT Mid-Cabin Open Bow 2013 could be the deciding factor.
Bottom line: Choose the Sunsation 32 XRT Mid-Cabin Open Bow 2013 if your priority is putting more people on the water - it handles 9 passengers and at 31,6 ft it has the deck room to back that rating up comfortably. The Sunsation 288 SS 2010 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 8 that costs less to run day-to-day.