I ordered a backup Vision Vivi Nova along with 4 spare heads from Gotvapes the other day. It was a couple of bucks cheaper than the one I ordered from Madvapes but the Madvapes Nova came in a Vision logo box with one head installed and two spares in the foam insert. Gotvapes mentioned that they were out of Vision VV tanks and were substituting A-clear, a clone that works well. It came in a plastic bag with only the installed head.
It works OK, but has the 4 wick array instead of the large single rope wick. It doesn't perform quite as well as the one from MV. The one from MV would vape well until it was at least 2/3 empty. This one loses flavor at the halfway point. I can't tell the difference between the two other than one vapes with more flavor and vapor than the other. Markings and construction are identical on both. I'm thinking that maybe I got a bulk packed Vision Vivi Nova from Gotvapes that didn't come with the extra atomizers for $2 less. I'm thinking I'd rather pay $2 more and get two extra heads and a box. Different resistances don't matter. I can reduce the voltage to compensate on my Provari.