Don't chew me man! Just trying to point out to you my findings, which are based on thd very little info available and youtube videos.
:-)

Anyway, sorry about that Tom. I havent had any issues with mine so I coulnd't tell about costumer service, yet (and knock on wood really hard).
I, however, had issues with the higher end Chinese suppliers, go figure!

Anyway I understand where you are coming from and agree with your attitude towards them.
My best guess is you will have an issue with all of them eventually.

Signing off,
FalconW