My buddy had told me about his P10...it sounded cool, but didn't particularly interest me. Then he brought it to the bar the other night and let me hold onto it for the rest of my shift. And all i can say is that i'm sold. i used it with my 808 cartos, and with his LR510 atty. even with just the 808 cartos, it vaped like a champ. and with the LR510? vaping heaven. not to mention, this thing is the definition of classy and should last a liftime. that being said, I'm planning on ordering one in the next week or two. I just have a question about batteries for it. I see on the super t site three types of 10440 batteries: the AW, the IMR, and the trustfire. what is the difference between the three? i'm not really clear on the high-drain concept. would the trustfire presumably have a longer battery life between charges, since its 600mah instead of 350? any help would be greatly appreciated. thanks.