All good comments so far,I have sold motorcycle securities and alarms for over thirty years now and the best advice is obtain and use as many different devices as you can, all your eggs in one basket is not a great option when protecting motorcycles. One of the most fun options is to fit a silent alarm that calls your mobile phone and your house phone, that way you can surprise the visitors in the act, you may consider taking the Rottweiler with you as well !