yeah, right now I ride a 62cm Steamroller and an "XL" Stumpjumper FSR - they seem to do ok for me, but I'm not that demanding of a rider either. I know that custom is the ideal move, and convincing myself isn't really the problem - it's convincing my wife. She already hates the fact that my Stumpy cost more than her engagement ring did!

Thanks for all of your suggestions, but I'm not really looking for a mountain bike - I'm thinking more of a monstercross sort of geometry. I will be taking this thing on longer gravel rides, bike camping trips, winter commuting, and our local singletrack (which is very flat and smooth). My biggest mistake was buying two very specific-purpose bikes before I bought something versatile like I'm needing now.