Mason 220

I've never used U-locks, but this feels sturdy and secure, and I'm very confident in it, and it's security ratings. It also fully clears a 4x4 post with good room to loop a folding lock or cable through, which is awesome. That being said, I'm taking off a star for not including the mounting hardware. It's an $85 lock, they could throw in the mounting bracket and keep the stickers.

Completely satisfied

I have used the product a few times, and I must say that I am much more confident than before. The weight factor was also important for me, as I use it for a bike, and I am very satisfied. I placed the order from Canada, and shipping from the United States was no problem. I didn't have to pay any taxes upon delivery (UPS).

Best option for college campus