The spec sheets list the Malibu 21 vRide (2009) 2008 as modified vee and the Malibu Wakesetter VLX 2008 as v25 wake, so check how each hull rides in the conditions you use before you decide.
On paper these two are close siblings in the size department - Malibu 21 vRide (2009) 2008 at 21,0 ft versus Malibu Wakesetter VLX 2008 at 21,0 ft. At 3 500 lbs and 3 600 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 Malibu Wakesetter VLX 2008 tops out at 400 hp. Engine specs for the Malibu 21 vRide (2009) 2008 aren't listed - confirm with a dealer before selecting an outboard.Both carry nearly identical fuel loads - 46 gal and 46 gal - so range won't be a tiebreaker here.
Both boats are rated for 11 passengers - a good fit for a family of four or five plus guests. Comfort at capacity is another matter; the longer hull typically means more seat options and better weight distribution.
Bottom line: The Malibu 21 vRide (2009) 2008 and Malibu Wakesetter VLX 2008 are closely matched on the specs that matter most. Test-ride both on the water you actually use, check current dealer pricing, and factor in long-term service access before you sign.