I have been leaving my XC mountain bike at work and riding it during lunch (since it gets dark at 4:30 in Italy this time of year...). It seems like every time I go to ride my road bike, the Garmin 520 I currently have is at work...That and the fact that I like gadgets has me looking in to another cycling computer to leave on my road bike permanently. Anyone have any feedback on the Wahoo units? How do they compare to the Garmin?