Think it was best described here over on the other thread by the great FSROQ
"There is a demand for high power
mods, and now somebody came and produces it for small money. Within 3 or 4 month this can be bought for 60 or 70$ and others will have to remake there policis of production and prices or will disapaer.
No need to be sceptical, we know for now that a step down regulater gives far better results then a booster. Can be seen at any cheap box
mod, madvapes simple vv box
mod gives better power then a provari.
Thats the real world withouth all the hype."
questions about it go on for a page or two. But it is interesting info. Hope it helps.