I just discovered the joy of commuting with my Monocog 29er and I'm still experimenting with different gearing. Yesterday I tried a 17t to go with my 32t chainring, today a 16t giving me 58 gear inches. I thought SSing was supposed to be simple. Now I'm always ordering cogs and calculating gear inches. So far I've stayed on the relatively flat part of town and when I do stand up for a short riser I feel undergeared. Sitting down and spinning I could use a few more gear inches as well. But here's my delimna; I'll mostly be riding offroad so I want to easily be able to return to 32/20. I may have to go to a dinglespeed but I'd rather not. So what are you on/off road riders doing for commuting/offroad gearing? How hilly/flat are your road rides?