Eagletac D25A RC MKII
The D25A Clicky is an Eagletac classic EDC flashlight pushing out up to 405 lumens using a a 14500 but can also run on a standard AA battery. It will easily slip if your pocket and you will forget it is there until you need it.
This light is great because you can use AA or 14500.
Their prices are competitive and the service is outstanding. I was looking for input on a brand of flashlight to purchase and emailed 7 different companies. Killzone got back with me the same day. A second company took 2 days to responds and no one else responded. Because Killzone got back with me so quickly, I immediately started working with them. Every single email was answered in less than 24 hours, usually within an hour, even late at night! Since purchasing my first flashlight from Killzone 4 weeks ago, I have bought two more from them. I recommend them highly. I've never given a company this high of a review before.
Great flashlight phenomenal website. But terrible UI!