Well my crappy bike was stolen and I was forced to buy another bike. I ended up with a Redline 925. I got it today so I have not been able to ride it yet really. I got a Kryptonite U lock(keeper LS model), so I want to know what everyone thinks of these locks. It seems that Kryptonite is the brand to go with. The model I have is rated as a "7" on a scale of 1-12 on Kryptonite's website: (https://www.kryptonitelock.com/Outle...=1000&pid=1109)

I live in Chicago and I keep my bike inside my apartment, but when I ride to the train or to school, I want to be sure no one steals it. Is this type of U-lock sufficient? Should I buy a better model? Has anyone ever heard of these being picked, cut, broken, or compromised at all?

Thanks in advance!
JD