I commute on a 3 speed. My commute is about 28 miles round trip. I usually get to commute three days per week, though I get to do it everyday this week. My area has minor hills, but lots of wind. (25+ mph sustained headwind today, with gusts over 30 mph.) To make a 3 speed work, setting up the gearing right is important.

I like the Via 1 a lot. One of my local shops carries the Via 1, and I found it to ride well. I've been eyeing it for a couple of years. Its gearing, with a 44t chainring and a 21t rear cog, yields about the same three ratios as what I ride on my own 3 speed. This setup works well for me on my commute. On fair weather days, I cruise in high gear. On windy days like today, I spend most of my time in the middle gear.