What's more important than anything is to race the gear that you're in. People who use smaller gears have to race differently than those who run larger gears. In a Wednesday night points race at Dick Lane, you'll see everything from 90-102 in the A race with no direct correlation as to which gear performs better. I've been running a relatively big gear for my timed events this year, and sometimes I get lazy and leave it on for the next few weeks. In that situation, I just have to adjust and race accordingly. I'd say just try a bunch of different gears and ride whatever feels good.