So I am finally starting to get all my carry gear in order. I've got my shiny new glock 19. A very nice Pure Kustoms Black Ops Pro Holster. My next 2 purchases are a new knife and a pocket light. Since I have knife that functions well enough I am concentrating on the pocket light for the moment. What would you folks suggest for a very small tactical light. I carry a lot of stuff in my pockets already (Front pocket wallet, keys, knife, blackberry) so I am looking for something as small and light as possible.