ok in a world where you dont care about milliamps because you dont mind charging and changing batteries because you have 12 bays to charge batts on (1 6 bay, 1 4 bay, and 1 2 bay) and money isnt a problem either. Your only concern is firing LOW and drawing HIGH amperage like whats needed for the TFV4 and Alein claptons built low in the .08 to .2 range what would you buy? I have had most batteries under the sun I bought about 20 batteries 2 years ago ranging from purple efest 2500mah to vtc 3-4s I had a situation twice that I failed to lock my mech and once I stood up on end and they fired till they were untouchablely hot not sure if it was the battery or the RDA that cause the heat but the point is they never vented not even close in fact I still use the Efest that was crazy hot till this day with no issues. I would say I was lucky though! so with the givin paraeters what would you do? what would you buy? I use a noisey cricket a SMY GOD 180 (have married batts for this) and various mechs. Thanks for your input!!!