I picked up one of the 3C's yesterday just to have the full collection! :naughty: After owning these for a few days I thought I would give a short rundown of what I like and dislike about them. I will start with the positives. First of all, they seem like they are built very solid and will put up with a lot of abuse. This makes them great lights for use in a car, truck, toolkit, etc. If accurate, the runtime on them is good. Three hours for the AA model, and 18 for the C and D's. This is the ratings on the package for the high mode. They give no runtime for low. I have no way of knowing if they are regulated, however. All three have a nice white tint and nice beams, although for some reason the C models beam is a bit ringy. The D model, my favorite, is very bright! All three have low modes which are decent, but could have been made a bit lower. Maximum lumen ratings on them are 590 for the D, 224 for the C, and 70 for the AA. Nothing is perfect, however, and there will always be things we do not like about lights we purchase. The three modes on the C and D models cannot be skipped. You turn them on and it comes up with the mode after the last that was used. All three are high-low-strobe, but the AA model allows you to skip the strobe. If you turn it off for over a few seconds, then turn it back on, it will start on high. I am not sure why just the AA model was designed this way. I also think they could have made the AA model with a bit more output, maybe 150 lumens and wonder why they did not use the same LED in the C model like the earlier models that were around before the holidays. We would have had a 500 lumen C cell ArmorMax. When the rubber cover is put over the tail, the switch is hard to activate with your thumb. All in all I think these are great brick and mortar lights and I am glad I added them to my collection!