Say what you will about the Chinese (or, in previous timeframes, the Japanese and the East Europeans), they aren't stupid. They make what we buy. If we continue to buy, they continue to make. If we stop buying one thing and start buying another, guess what? So, if you aren't happy with product quality—wherever it is made—vote with your wallet. Spend your money elsewhere, and let the junk makers know that you are, and why.
Is the Zmax flawed? Yes. Is it far ahead of its early Vmax beginnings? Yes. Is it still a very useful device, even with its shortcomings? Yes. Will it get better? Yes.
What will blow the Zmax away? ProVape coming out with a VW ProVari.