For me, the big thing is being able to use the computer on all three of my bikes, so I've been using a Garmin Edge 200 GPS model for the past few years. If I were to buy a new GPS computer, it would likely be the newer Garmin Edge 25 - that has anout everything I need. I've also used a Planet Bike Protege 9.0 Wireless and a Cateye Strada wireless over the years, and they both worked well for a one-bike setup.