The beacon is great. Tons of reviews all over the web on how good and fast it performs and I agree. I have had a few instances where we had about 10 beacons buried around a field and it had trouble picking the closes one. It kept telling me to stop and hold steady. I believe the new firmware fixes some of that according to the description but i have not tried it and the chance of trying to find 10 buried people in the backcountry at once is unlikely. With 3 buried beacons its worked great. Also when close to my iphone its done some weird things sometimes, from the interference i guess. I choose just not to bring my phone(no reception anyways). It works great when you need it most, its light, and worth every penny if its not overkill for you.