MD900 - the 406 beacons will become mandatory for all aviation and maritime passenger carriers so there is no point in not getting one. The whole point of them (when linked to GPS) is that you don't have to home to them (they only transmit every 30 seconds or so making that quite difficult anyway) because you already know where the beacon is (within 100m or less). You just pitch up, maybe search a very small area, perform a fabulous rescue and then make it back home in time for tea and medals!