I prefer the aerotank line from kanger. The benefit of using the vv v3 is at 11 watts you won't be over powering your
coils. I've run the stock
coils up to 20 watts

(I now rebuild my own coils on the kanger heads, it's a pita at first, but the flavor is much better.....but you can't rebuild the "new" style heads, they don't pull apart like the old ones) I read somewhere that the brand new square shaped OCC heads (organic cotton coil) should fit some of the old
tanks like the aerotank.....i hope this is true