OnGuard Bulldog Mini TC 5013TC
Sometimes the best bike lock is the one you're most likely to have with you. Many U-locks weigh close to 5 pounds, which can be a lot of weight to carry in a backpack or mount on your bike. Though the OnGuard Bulldog Mini TC 5013TC is not much smaller than the Kryptonite New York Fahgettaboudit U-lock, it weighs a lot less -- 2 pounds -- thus making the Bulldog Mini 5013TC bike lock more portable. Reviewers believe the lock's small size makes it difficult for a thief to gain the leverage needed to break this lock, which has been shown to hold up well against hand tools. But don't expect it to fight off the power tools that the top-rated Kryptonite can. While most owners seem pleased with the lock's sturdiness, some find the keys to be less so, a few having broken inside the locks. If you live in a high-theft area, it may be worth it to trade a little weight for toughness. The OnGuard Bulldog Mini 5013TC has $1,500 of anti-theft protection, but it's not available in New York.