I have to say the only tank I have that's close to a Subtank is a recent buy ... the Serpent Alto
SKU 6925401
Still not on a par with the V2 / TopTank air flow (its only got 1 slot) but I use the same single coil build as I do with the RBA ... just by spacing the coils a little ... easy build and its very close taste
Edited on 8/29/2017 at 1:52 PM. Reason: