So the time has come: I'm finally getting a bike alarm! But I have no idea what I can get on a budget of $300ish. Obviously I want to get the best bang for my buck. (Would also prefer something I could remove and put on another bike) I live in an apartment complex on the third floor (granted it is the nicest gated complex in the area, but it's no locked garage), and I'm trying to avoid having to post in the Stolen Bike section... My mechanic says he has a Scorpio alarm on his, but they can cost like $350-400 for the good ones. What all do you guys have on your bikes?