Word. I love my Stingers. Some people feel the 2*700 versions are too big, but whatever. The 18650 version is supposedly about the size of a Billet Box, but thicker.
I run my Basic 1.1 around 40W or lower, and my KRMA around 60W. I've got a little single 18650 box that I use a tank on (not a DNA), and with 25Rs, I can only use it @ 60W for an hour or two before it says weak battery. I haven't bought any 18s in like a year and a half, I just feel 27's are the superior cell. But size does matter I guess.