Subtank mini is phenomenal. I've so far ignored my rba deck it came with. I used my first occ for a bit over a week (and I vape a LOT, about 8-10 ml juice per day, was blowing thru old clearo coils in less than a day) - when it tasted burnt, rewicked it with the cotton it came with - I'm still on the first coil after 2.5 weeks LOL