I think, very individual opinion...
If you can afford Provari and if you like it, you don't just get the quality product/service, you are also supporting the U.S economy.
If you prefer to go for Vamo or other China products, especially buying from China sellers, you are going for the cheaper quality, and you are supporting China's economy.
Somehow, I do feel that many of us, the vapers, are supporting those bad things they do lately
I bought a lavatube v2 last november and it keeps breaking. My third one is about to take a crap and I am sick of not having a e cig for a week or 2 everytime it breaks so I want to by something to replace it. I'd like to spend as little as possible, but I'd like it to be reliable, I don't mind spending more for reliability. I'd rather not spend 160 on a provari. Any suggestions?