I quit paying attention to or collecting any commuting data a long long time ago. The commute is just the same basic thing every day and I was simply wasting time dealing with numbers. I know when I feel good or bad or the wind is killing me or the tires need replacing without looking at a spread sheet.

I do still use my Garmin 200 on my recreational rides, road rides and mountain bike rides just for the hell of it. Those types of rides vary a lot more depending on routes and conditions and it's nice to be able to go back and retrieve the route from the GPS for use another day. It's more of a conversation piece on group rides than a it is a training aid