I hunt with a gang that uses them, including myself. They're great, the only draw back is the range of the radio. For example, we were doing a small push behind my house. The push is 3/4 mile as the crow flies. Where I live it's very very thick and heavily wooded. The guys starting the push had shot three deer while lining up. We tried to reach the two other guys on stand 3/4 mile away and couldn't reach them.We all had rhino's. There again, it's extremely thick where we hunt and the range is greatly reduced. When we get to more open country the range increases some, but still lacks the power of other radios. I fish commercially (for a living) and use GPS every day. In both my boats I use strictly garmin GPS (Garmin 2010C units). Although the ones in the boat are far superior and far more expensive, these little units (the rhino's) still have much of the same qualities. The feature of being able to send your location to a friend is very helpful. The unit is very user friendly but then again, I'm use to running the garmin products. I wish the FCC would allow for more power in the FRS band, maybe someday. For now we just have to live with the limited range. While hunting with the group myself and a few others carry a motorola GMRS/FRS radio and the garmin. The motorola definitely out performs the garmin on the radio part. Being able to send location only works on the FRS band and not the GMRS band so the distance is greatly reduced. If we are hunting in an area we've never been we will switch to hand held marine band VHF's.
All in all, I'd recommend the Garmin Rhino radios. I've used garmin for years and have had to send a couple of items back to garmin for repair. Both times the units were fixed free of charge and in a timely manner with no hassle. I summary, the GPS part of the radio is fine, the transmission and reception part is sub-par. Hope this helps........John