Brand New Garmin Edge 510 Computer / GPS

Hey,
I'm looking to sell my Garmin edge 510. I just bought it but realized I needed detailed maps to go exploring so I'm going to go for the 810. http://sites.garmin.com/edge/

The 510 and 810 both have live connect so you can bluetooth between your phone and gps to let people know your stats anytime. Here's a pretty in depth review : http://www.dcrainmaker.com/2013/01/garmin-edge-510-in-depth-review.html