Not as new and fancy as the units you're considering but in my humble opinion, there's nothing better than the Rino series of handhelds. GPS, topo, roads, and a built-in FRS radio for coordinating with your buddies. When linked up, you don't even need to talk to know where eachother are....when you press the transmit button, an icon shows up on the other guy's with your location. Works great for cooridinated stalks, drives, or just to safely and quietly know where your buddy is when it's time to shoot. My two cents, take a look at the Rino line.