I can vouch for the QC issues with the Scorpius M10. I loved mine and actually thought I might have dodged the various issues until it stopped registering keystrokes intermittently, and progressively got worse.
It is really too bad, since the switches felt great, and the overall construction was decent enough. I even thought about picking up another, but decided to go with Filco- would rather have one good board than several iffy ones. A keyboard is one peripheral I expect to just work, and if I have to pay a premium for a high quality tool that will do its job, so be it.