Myself and a couple friends have the Garmin Rhino's. I'll admit we haven't had a lot of "play" time testing range yet. 2 of us on the plains of Wyoming had NO problem transmitting up to 3 miles without walking outside the house with metal siding. Haven't had the chance for all 3 of us to play in the hills yet. I do have to say the option of sending your location, a waypoint, or even an entire route to your friends is awesome! They are very tough, very water resistant and the 110's and 120's can be had in decent shape used pretty cheap for what you get. They also can send text messages like a cell phone. That works pretty well in spotty reception areas since just like a cell phone you only need reception for a moment for the message to go through. The 130's even have weather channels.