I've got 4 VAMOs from SmokTek.com. No scratches or anything like that. However 2 of them are slightly different shades of SS than the other 2. Also, 2 have what looks like a black border on the top and bottom of the screen (inside the plastic) and the other 2 do not. No biggie. I wouldn't blame the vendor for the QC on the production, however, the vendor is responsible for remedying the problems with the device.
The problem is that at this point, there are about 5-6 differend factories manufacturing VAMOs at this point. So QC can vary significantly, as well as the grade of SS, buttons, 510 connection, ect.
Just the nature of the beast at this point.