You don't need LR anything with the ProVari. In fact, you can use just about anything. I've thrown 1.7ohm to 5.0ohm at this thing. It's awesome. That's the nice thing about VV. I don't seek to vape at HV, either. But the carto I have right now, at 4.2v, is niiiiccee. VV is not all about using...