I am looking at getting the forerunner 305 (or the polar CS 300). One questions though, is there a bike mount for it, or some other way to mount it on the bike, so that I don't have to look at my wrist for speed, distance, heartrate etc.?

Also, do you have the optional speed/cadence sensor? Does this do a much better job with speed and distance because it is using the wheel instead of the GPS satelites?

The reason I am looking at these ones instead of the Edge is that I want to be able to use it while running and at the gym at least as a heart rate monitor.

Thanks!
E.