I am looking into a Garmin GPS to replace my now cyclometer.

1) I've kinda narrowed it down to either the Edge Touring or the Edge 520. I don't know anyone that has any sort of GPS so no one to get ideas from. I only need the basic speed/distance info plus elevation/grade and cumulative elevation and heart rate. Also, would like to learn how to download routes from other riders and record and save my own rides. Any thoughts?

2) Once I have this GPS is there a better website to use for uploading my trips and downloading other routes? I've heard about Garmins share site, Strava and Ride with GPS.

3) I know Ride with GPS charges for their site. What about the other two, do they also charge?

4) I'm completely ignorant to these biking GPS's so any comments (consrtructive of course) would be greatly appreciated.

Thanks, Matt