Things I liked: It is very bright, almost comparable to a multiple LED light. I also thought the pressure switch was a nice idea and I use it.
Things I would have changed: Maybe just make the whole thing out of aluminum but then it would probably be priced higher, other than that absolutely nothing.
What others should know: It's about 5 inches long so make sure you have room for it and it doesn't get in the way of the adjustments of your scope like it almost did on mine. Also the mounting screws on it can be easily hand tightened to sufficiency and can be removed and retightened easily and frequently without wearing.