I think this is a better u-lock in a similar price range, 1mm thicker shackle. If someone is going to cut through your lock that cable won't help. I would recommend instead getting a 2nd u-lock or a chain if you want a 2nd lock, or getting locking skewers for your wheels. I use the above lock plus a 3-foot Kryptonite chain, but I don't lock up out of sight unless I'm locking inside my work. Making it difficult for a potential thief is what matters, just a question of how much you are willing to spend, and how much additional weight you are willing to carry, to do that.