I have one and really like it. It's one of the cheaper models and if I remember correctly was about 70-80 bucks. Expensive for a lock but not when you think of how much it would cost (in embarrassment alone)to drive off with a disc lock (one w/o an alarm)still engaged. Security alarm, disc lock, and disc lock reminder all in one--I figured how can I go wrong? It still has the original batteries in it too and it's a year old. It has been rained on quite a bit too and no problems.
