The spec sheets list the Malibu Sunscape 20 LSV 2008 as cut diamond and the Malibu Wakesetter VLX 2006 as modified vee, 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 Sunscape 20 LSV 2008 at 20,0 ft versus Malibu Wakesetter VLX 2006 at 21,0 ft. Weight tells a clearer story for trailering families: the Malibu Wakesetter VLX 2006 tips the scales at 3 600 lbs - 400 lbs less than the Malibu Sunscape 20 LSV 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.
Both boats share a closely matched power ceiling - 400 hp for the Malibu Sunscape 20 LSV 2008 and 400 hp for the Malibu Wakesetter VLX 2006. 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 - 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 Sunscape 20 LSV 2008 and Malibu Wakesetter VLX 2006 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.