I have all of 1.4 hours in a Cougar (it was taken off leaseback a week after I started flying it), but I can say that I loved the little time I spent in it. It performs like a Duchess on 20 fewer horses per side. The owner said that it can sometimes be hard to find parts, although overall it's been a reliable and cheap airplane to own.
It handles well - a little lighter on the ailerons than the Duchess. VERY comfortable cabin, and the panel has a styling that makes you feel like you're flying a much bigger plane than you are. Easy to land, and easy to fly. If you can find one in good shape - I think it'd be a good deal.