Two tanks both with 500 tight dense wick 70mm, both 32g A 1 kanthal, both same 100%vg juice, white has 6wraps 2.2 ohms, and the black 10 wraps 3.6 ohms, vaping both at 1.95 amps. 8 watts and 13.5 watts. If I raise the watts on the low ohms I start getting a harsh TH. This is why I prefer high ohms high voltage, large coil area more vaper, lower amps, less stress on VV regulator. I personally get much better results vaping this way, to me the 4.2 V is a cheap cigar and the 7 volt is an Opus X. Please this is just my opinion and I know many prefer high watts on LR, I just put it out there for those who may want to give it a try.