I use the Edge and enjoy it. It does not have maps or turn by turn. You can mark your starting position and then have the "bread crumb" line recorded to find your way back (limited use IMHO as most needed off road and screen is too small to separate twisty paths from each other). I use on the road and MTB and works well both places. I like the virtual partner that you can race. It has cadence, HR and all the other bells and whistles. Mounts to stem which I like. If you are not using a power meter it seems like the best computer to me. Also it has a rechargeable battery which is nice.