I went with this... http://www.amazon.com/gp/product/B002IIZZTS Except looking at my setup,and it appears my stem cap is glued down on my Cannondale so I'm not sure how this works, but I'm sure I'll figure it out. Gonna be sweet! I use Strava now, which to be honest it doesn't seem like most people use it and I'm not sure why, but I might try Cyclemeter as I've heard great things.