My loving GF (Happy Birthday, hunny!) got me a silver LAVATUBE for xmas and it came today. Awesome. My 1st REAL VV device, and wow its effin awesome. Well I got some cheap-o UF/TF 18650s with nipple top and it doesnt fit. grr. Not to worry though I got some flat head unnamed brands and it fires perfectly. I need some new batteries. I was looking at the red AW IMR 18650's or the black ones. I don't wanna spend $20 per battery but I heard that the black AW 18650's are the best. Any advice on where to get batteries (I've checked superT and this other flashlight site). Thanks!