Just done a horizontal dual micro coil on wick with total combine resistance of 0.8ohm... most of the coil is inside the well, only abt 30% of it is exposed. top cap one turn from base. ..VP is as good any conventional 1.5mm airhole dripper. TH and flavour remain strong. I'm a 12mg guy, but with this bad boy, I had to go down to 6mg...lol