I love love love my 13'6" Maravia. It is getting a little old and when I buy a new boat, it will be a Maravia. They are tough as hell, and track like a mother...(I mean great!) Good for both whitewater and fishing because the are so stiff. As far as "flippiness" goes, we've only gotten ours upside down once in 10 yrs., and that's including running the Ark. at high water, the Salt at scary high water, etc. New Maravia's also have a great warranty.
We don't deal Sotars, but I've rowed and paddled my fair share as a whitewater guide. I know they are solid boats and haven't heard any complaints about them. Check out what we have for Maravia's at Riverboat Works, Specializing in New and Used Rafts and Catarafts and Custom Built Frames
, and, yes, sale time is coming soon!