i wouldn't buy one, but thats mine opinion and taste. I like small single or two cells lights, so you can carry them around on you. This way it's much more likely it will be on you when you need the light. I also don't like 3 or more battery light, because i always end up with one or two too little or too much.

And at 40 bucks, you might aswell buy other good and bright lights. If you surf around, you can find many reasonable priced quality lights.