What's wrong with Font Book that comes with OS X? I never had problems with it. I used Suitcase before but it started to give problems and of course they were all ironed out, IF you paid to upgrade to the latest version. Screw that.
Font Book is sufficient for my needs anyway. You obviously have too many fonts if you're getting lost. I can't see how a font management app is going to help you if you still have lots of fonts. You'll still have to scroll through them to see what they look like. Might be a good idea to start picking a few of your favourites and listing them under "old reliables" for example.