Re: Would someone create a post that shows the different and best types of keychain LEDs
Different and best, eh? How about just the best: ARC-AAA.
There are just so many different types, you will probably be best off doing a little research on some member's pages. You'll find many descriptions and pictures which would take too long to repeat here. Brock, Stingmon, Chris M., myself (,and others) do reviews of lights. My reviews are still rather small in number while Stingmon has a very large repository of information on his site: http://ledmuseum.home.att.net/
K Horn - you're quick! Just beat me to the post on that one!)