Kryptonite RCL III

Pros: Cable lock, combination, so convenient. Product design for the lock makes it look menacing.
Cons: The bracket unreliable so the lock falls off while riding.

This is a lock that is OK for medium security. I use it in Manhattan, with a pretty fancy bike. I'm OK with using it to lock my bike when I step into a store for a few minutes. It's added security with the integrated wheel lock that my bike has. A ...

Pros: well it looks like it could stop theft
Cons: very easy to break through

Yes that is right, this lock promotes theft, especially if you have a nice bike. I tell you the truth and it is all fact.

I bought this lock to protect my very expensive bikes while at class on campus. I go to school in Boulder, the bike...

Pros: easy-to-turn keys, light and convenient
Cons: too easy to cut/break into

My bike is only worth $200 ... it's a one-speed cruiser. But I'm pretty sure someone tried to bust the lock recently while I was in the gym in downtown Denver in the middle of the day.

I came out and when I entered my combination it wouldn't open. It started to but would not come apart. This was bizarre because it has always opened easily for months. I managed to pull it apart and noticed that it appeared that someone tried to jam something into it, like a car key or something, to bust the plastic combination housing.

I mentioned it to a friend who said she had this lock and her bike was stolen last month in broad daylight. Some people in a van used boltcutters and had her bike before anyone could see it.

I decided to return this lock and get the kryptolok combo lock, which is a u-lock. Hopefully my cruiser will be safe now!