I think you'll find these are now almost mandatory for insurance on any new or bike worth approaching 20k. It was in my case no tracker no insurance worth having ie only 3party. Its also worth remembering if your garage or wherever you keep the bike is restricting (metal or thick roofing materials) or blocking the Sats. The unit will use more power, bit like Garmin sat Navs in doors, WiFi and mobile issues in certain areas. Obviously if your situation is perhaps as above, it's not workable without some modifications. The unit themselves work so just writing them off crap is a mistake, in my opinion.