I'm a fan of the Arc AAA (EDC on keyring) and DR Photon (EDC on other keyring). It makes sense to pay close attention to what people carry EDC because those lights (or tools or whatever) are the ones getting used most frequently and getting knocked around the most. The ones that can take the most daily use abuse are the ones more likely to be ready after being stored in a PSK. If your PSK is there for survival only (some people combine EDC items and PSK items) then make sure whatever light you have uses lithium batteries...better shelf life than other types. Remember that a AA light will have the best chance of you scrounging for batteries from other things (remote controls, etc.) if need be. I would not suggest relying solely on countycomm.com lights. They have a lot of advantages, but if you're carrying one or two of those, and they happened to be the bad ones in the batch... Then again, buy a few and put them through the paces. Carry one in you pocket for a few months. Or two...one to use EDC and one to just sit...see how it holds up. It might be just the thing for you. Or carry one in your PSK (space allowing) and go for that first in a situation. But have something else as a back up. Here again, the Star Trek philosopy applies...triple redundancy. At this moment, I've got an Arc AAA on the keychain my flash drive is on (in this computer right now), and Inova X1 in my PSK (in cargo pocket) and Inova X5 in the other cargo pocket. Worked well the other night...driving in really bad weather after dark on a school trip no less, the person navigating was using the Arc to read the Mapquest directions (put us about 5 miles off course btw)then when it came to reading dark road signs in the middle of nowhere, the X5 was quite handy...

Going off topic now, but whatever you choose, put it through every possible pace you can think of...test it out and see how it works for you.