My hunting partner and I are looking at purchasing a couple of these before fall. I have a Rhino 120 currently and would like to get a newer model while keeping this one in case someone else goes with us, or as a spare. Before buying one I had some questions. What is the best Wyoming map to get for one of these that shows the private/public boundaries, hunting unit boundaries, and topographical information? Are they fairly user friendly to work the GPS compared to a GPS only unit like the Oregon 550? Will the peer mapping feature work with my older Rhino 120? Can the 655 use AA batteries, or only the rechargable battery pack? I definitely want the option of using AA's when I'm away from a charger but a rechargable pack would be nice for shorter ventures. Is the camera worth a darn on the 655? Thanks alot for your help.