DOHARA,
If you are going to buy a 21 V-Drive the Schiada has the best ride by far. Over the years I have owned a 20 foot Mach 1 V-Drive 427 Ford side oiler powered, Spectra 20 V-Drive with an LS-6 Chevy, a Howard 21 stern drive with a Chevy 502 and I have ridden in some Campbell 21s. My current boat is a V-Drive Schiada 21 River Cruiser. Here are my thoughts on the boats I have owned. The Mach 1 was a semi flat bottom that beat me up in rough water. The Spectra and the Howard are basically the same boat. Decent ride in moderately rough water but not in heavy Havasu type cross chop. The Campbells have a some what flat bottom and will beat you severely. The Schiada 21 rides much better than all on the above but in really rough water with a lot of cross chop it to will take some hits. If you spend a lot of time at Havasu or Parker the Schiada 21 is the only way to go if you are thinking a 21-foot boat. With all of the larger boats on the lake and river and the comp ski boats with ballast tanks churning up the water it makes it really rough for any 21 or smaller boat. If you want a really good ride all the time you need to think about a 24 foot or larger.