ok, so my edge800 arrived yesterday and frankly I'm kind of in awe at how powerful this thing is. much more impressive now that I've really gone thru the device and am beginning to really understand what it is capable of. Aside from that, after getting logged into GarminConnect and looking around at that pretty extensively I'm trying to figure out how Strava, MapMyRide or RideWithGPS add any tangible value to the data that you get from the unit and can manage on GarminConnect.

can someone offer insight to some concrete benefit of these 3rd party tools??

Thanks guys!!! this whole GPS training tool is completely new to me but I want to get as much out of it as I can.