I've been vaping for almost 2 months now and i'm ready for a little better quality vaping experience. My starter pv was the Ego passthru, I decided on this for 2 reasons...1. price and 2. I'm at my computer for a good portion of the day. Unfortunately I want more than i'm getting from my Ego, so i've decided to go with the Maxi Rough Stack and what I wanted to know was what combination of batteries will I need to vape at 5v, on madvapes site they tell you what batts you need to vape at 3.7v, 6v, and 7.4v. Now I don't think i'll be vaping at 7.4, but the other 3 voltages seem right up my alley(i think). Any and all help will be gratefully appreciated