Man, you guys are nerds! I have a triple 9 and a compact 10 for my commuters. I am not really fussy about which I like more in terms of the gearing. My commute is not hilly so don't tend to shift a lot. I'm most comfortable pedaling at 95 rpm, but I'm fine anywhere between 80-100.

My other bikes are 53/39, but since I'm not that strong a rider anyway I tend to be be mostly in the 39 ring, occasionally slipping into the 53. Doesn't bother me at all.