That really sucks. I hear of so many sport bikes getting stolen. It used to be only Harleys that were at risk. I have recently moved into an apartment from a house with a garage. I've been worried. I keep both cabled together and both have alarms. One bike has a Gorilla alarm - they are cheap but work ok. Next bike will have a Komodo alarm with pager.
http://www.talonalarms.com/komodo.html
http://www.talonalarms.com/komodo.html