I've been using one since May. September. It's an awesome device. But it definitely has room for improvement.

Software
- On the ride view, it would be nice if it would mark a secondary axis on the right.
- The software doesn't have anything in the way of tracking longterm progess.
- There is no way to add waypoints from the software, only on the ride.
- Allow me to designate waypoints to altimeter sync points and rescale the climbing graph to make things more accurate for when barometric pressure changes during the ride.

Hardware
- Allow me to customize the 4 data items on the top ribbon.
- Allow me to display 2-4 data items on the bottom ribbon.
- Give me more Altimeter calibration points and allow me to name them.
- Let me customize the amount of time the
- Record a 1 minute average cadence in logs so I can get some sense of how I'm respoding to climbs.


As far as GPS goes, from everything I read Garmin is nowhere near perfect. No one else makes a competing unit and it seems to me that there is a market opportunity for another company to make GPS cycling computers. Garmin is releasing a Rox 9.0 type unit that has no mapping capbilities. Just tracking. This would be a good place to start. I'm hoping to see a Rox10.0 GPS next year.