I like mine, but twice I had the lens pop off when going over rough patches of road. I now have a thin rubber band wrapped around it and haven't had any more problems with that. I do now have to keep a supply of rubber bands handy at home, and check them when I change the batteries. The rubber bands don't last too long out in the weather and I wonder if they diminish how effective the light is.

I do like how it looks like a reflector, I hope this keeps the thieves from noticing it. I wish they hadn't equipped it with a quick release tab and had instead fixed it permanently though. I'm tempted to try model glue on it.

Have to agree with those saying that it isn't a good idea to mount a white light rear facing though. FWIW, Cateye makes the same light in red, but there are better rear blinkies out there. I'm partial to the Mars 4.0