The Malibu Corvette Luxury Sport-V Coupe 2008 is a flat-bottom design and the Malibu Ride XTi 2007 is a modified-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 - Malibu Corvette Luxury Sport-V Coupe 2008 at 20,0 ft versus Malibu Ride XTi 2007 at 21,0 ft. At 3 000 lbs and 2 900 lbs respectively, both sit in a similar weight class - either should pair comfortably with most mid-size SUVs and half-ton trucks, though always confirm your specific tow rating with the motor added.
The power gap is worth calling out. Rated to 505 hp, the Malibu Corvette Luxury Sport-V Coupe 2008 has a 105-hp advantage over the Malibu Ride XTi 2007's 400-hp ceiling - enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Both carry nearly identical fuel loads - 37 gal and 37 gal - so range won't be a tiebreaker here.
For family outings this is probably the sharpest distinction between the two. The Malibu Ride XTi 2007 is rated for 10 passengers, while the Malibu Corvette Luxury Sport-V Coupe 2008 caps at 8. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Malibu Ride XTi 2007 could be the deciding factor.
Bottom line: Choose the Malibu Ride XTi 2007 if your priority is putting more people on the water - it handles 10 passengers and at 21,0 ft it has the deck room to back that rating up comfortably. The Malibu Corvette Luxury Sport-V Coupe 2008 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 8 that costs less to run day-to-day.