The one plus I can offer for VW (at least in my case) is when you have multiple gennys and swap them often. Also, when the coil's resistance goes up a bit as it 'seasons', and when it drops as crud collects... as long as the resistance is over 1.2Ω, the Vamo takes it in stride. Screw it down & vape away. My dos centavos.
I bought a Vamo recently because of all the hype about VW, I found it to be no better than VV in my use.