When ordering the Kryptonite New York Fahgettaboudit Chain and Disc Lock, we knew it was big and heavy. When it arrived, we were shocked at how much more of both adjectives this lock is. It's 5 feet of chain with a mini but hefty disc lock, weighing over 15 pounds in total. Wowza. As expected, this lock provides incredible security, durability, and versatile locking positions. It's also the least portable model reviewed, best left at a bike rack you frequent on a daily basis where security concerns are high. This is the most intimidating lock of the lot, but it's only right for folks who need this type of deterrent.
If you need to bring a high-security lock with you throughout the day, save some cash by checking out the Kryptonite New York Standard U-lock. It's still weighty, but still portable and much easier to use. For even less weight, but at a minute drop in security, is the ABUS Granit X-Plus 540, which is the most transportable high-security U-lock reviewed.