There was a Soverel 33 at our club for a while. Tellingly, it was sold BEFORE the younger members of the family arrived. It seemed to have a lot of strings to pull to make it perform to its full potential. Since they were designed and built for racing with light scantlings, you should also be on the lookout for structural problems. (As with any boat, but especially one that''s likely to have been raced hard.)
A C&C or J/boat, and espcecially in your area, a Schock, might have better resale value.