Yup, this is a big one! I can't imagine ANYONE being able to steal a bike (if you attach it like they tell you to with the cable) or your front wheel/tire -- and you don't have to take it off the fork to secure it!!! That's a shortcoming with a lock that DOESN'T include a cable. Even with a quick-release front wheel, it's a pain to take it off and then put it back on (straight) when you return to your bike. But if you don't have a way to carry this thing, you might decide it's too big and bulky. I've decided it's worth the trouble of lugging it around, but then I ride in the city and prefer to have a bike to ride rather than an empty front fork -- or worse -- an empty bike rack. 4 stars

and my bike is at class. I spent 10 minutes fiddling with it, and could not get it open. The key turns the lock, but its stuck good. It often didn't open on the first try, but now its completely stuck. I will try another key, but I'm not happy now, after having to walk back.

edit: I found that knocking on the side of the lock barrel helps the most, as well as rapidly turning the key. Pulling on the U is useless. I added some oil (low temperature engine oil), and it seems to be much better. I think it is worst in below-freezing temperatures. It is better than it was, but DO NOT RECOMMEND. If you haven't bought it yet, buy a different lock.
1 star

After moving to Los Angeles, I needed to buy a second U-LOCK as bike's are a hot item to be stolen. One u-lock to lock my front wheel to the frame, and the second to lock the frame, back wheel, to a post, etc. I bought this U-LOCK not knowing the company, but it was sturdy and good feel and at a good price.

I had a HORRIBLE experience with this lock. My second time using this, the key broke off like butter while I was opening it. I have owned many U-LOCKS in the past and know how to not force the key, so I wasn't using much force at all. The key broke off inside the lock, leaving me stranded. I'll avoid my heroic details of finding my way home to then return with the 2nd key and plyers to remove the stuck key.

The key (you get two) that is made for this lock is EXTRA thin. All U-LOCK keys are thin and should never be forced, but this is a terrible design and major flaw. It's a good lock, but comes with a terrible key, so I would not suggest buying this. 1 star

Haven't used the lock in a few months, and I can't get it to open (I have the key, and it turns the lock, but can't get the lock to pull apart).
I thought this lock was well made, and secure, but it isn't working now. So, this is a quality issue. I will be able to return it to the store I bought it from, and get a replacement, but it is something to consider. 3 stars

This is about one of the heaviest locks I have seen on the market, the mounting bracket will not fit my road bike, but it probably will keep my bike safe from someone stealing it. The added cable is a definite extra. 3 stars