Remember that the Ulocks are primary security and cable locks are secondary (wheels, saddle, etc.). Have two Kryptonite Ulocks, a big one and a smaller one. The big one lives at the bike rack at school and its been there for three months already. I have stopped by there a couple of days ago and the lock was still there. The small one is for quick stops when I shop and such. The best security is not to leave the bikes outside for extended periods of time i.e. overnight. Watch this video so you can get an idea of good ways to lock up and how not to lock up. http://www.youtube.com/watch?v=aTA3JsZWiec Enjoy!