I have the Etrex Legend. It is a very capable unit. I have a bike mount on it and a bar on my dash to mount it and my XM Sat. The Legend un hooks easily and I used it today on a boat trip. The only disadvantage is it is a small screen and when you go into a national forrest or park, it shades that area, reducing the contrast even more. I have the topo maps I can load for whatever area I am in that can give you more information that I could ever see any one use. An area with real heavy tree coverage can sometimes block your satellite signals. I have wheeled for hours not paying any attention to exactly where I was and then just look at the GPS and know where I am. I would not wheel without one.