So, the other day my bike got stolen. Probably one of the worst feelings in the world.
Now, how did this happen? One thing I know for sure is that my bike lock sucks. I'd always wondered how OnGuard was able to price their locks so much lower than Kryptonite and now I know. They are pieces of shit. Somebody should be able to cut through a U-Lock with a bolt cutter, which is what someone did to this thing, like a damn pretzel.
You'll notice that the U-Lock material is mostly some sort of filler, the actual metal part is only about a 1mm thick. Another reason why the OnGuard locks are much lighter than other u locks.
SO, if you're buying a bike lock don't skimp. I learned the hard way. Most Kryptonite locks are great, especially the "Fahgettaboudit" series.