I have one of the Nitrolon Z-2 that is now EDC, bought a new forearm for my shotgun that has a built in Surefire and I found a good discount on a 6-P. Surefire has a good site and will send a really nice, informative catalog. I just weighed the cost , features and my expected use before I decided. The Nitrolon Z-2 worked well at an MVA the other night.