I bought a Mamba 8.5 last summer. It is an SUV. A luxury one at that. It is big, stable, and fast. For me it has been a great river boat. The outfitting is pretty good, and it is comfortable for bigger paddlers. I'm 6'9'' and about 250. Confluence Kayaks has the 8.5 and others to demo. Other boats you may want to consider are the Diesel(Wavsport), Hoss(Liquid Logic), Super Hero(Jackson), and Pyranha is replacing the H3, but I don't know the name of the new boat. Best of luck with your search. Also Confluence will bring those boats out to Meyer's pool in Arvada for you to try if, if you happen to be in the Denver area.