Ok i have 3 vv box mods that all use 2 x 14500 batteries. Up to this point ive been using trust fire flames but im looking to purchase new batteries. Should i get the AW IMR 600 mah, The AW protected 750 mah, or just get more of the TF flames protected 900 mah? I read a ton of threads on the 14500 batteries but most seemed to deal with single battery mods so wasnt sure how having a two battery mod would change the issue. Thanks for any assistance.