I recently overhauled my touring/commuter bike (a Nashbar aluminum touring frame/cro-moly fork). I put a new crankset on the front, specifically an FSA that is 50, 39, 30 and a new SRAM cassette on the back which is 12, 13, 15, 17, 19, 21, 23, 26. St. Sheldon gives a gear inch range of 113.8 on the top end with 31.5 on the bottom end, taking into account my wheel/tire size and crank arm length. I'm sure this will be fine while I'm commuting around in super flat Chicago, but wonder if I'll end up wanting to swap this FSA crankset out for a Sugino XD600 triple (46, 36, 26), when my wife and I move out there in the near future. This bike is mainly for commuting but I'd like to do some short tours and maybe the occasional S24O. Just wondering if it's super hilly around Ft. Collins thus requiring lower gearing. Kinda wish I'd bought the Sugino instead, but it's more trouble than it's worth to send back this FSA crankset so I might as well use it.