I have the Legend Cx and love it. I didn't realize how much I would also use it off the bike. When I was deciding between the Legend and the Vista, the guy at REI told me that you often need to manually calibrate the altimeter on the Vista to keep it accurate. It wasn't worth it to me. Come to find out that the Legend shows elevation, they just don't advertise it because I guess it's not very accurate. You will definitely need maps. The base maps are so basic as to not really be useful. If you want streets other than interstates, the maps software is a must. The other great thing about this unit is the SD card. I upgraded mine to a 1 gig card and it holds maps for a large portion of the US and Canada. I have the garmin mount on the stem of my bike. It works very well.