I'm actually seriously considering buying the Blackwidow Ultimate, call me crazy, but here's my thinking....
Yes, it has been plagued with quality control issues. Commonly people are returning them due to keys rubbing together, or LEDs failing. But these are refurbs... Wouldn't that imply that these particular keyboards most likely DID experience a problem and were returned to Razer? If that's the case then this batch has actually undergone a second round of QC/repairs, and as such should be more reliable than factory fresh boards.
Razer wouldn't dare resell a returned board without fixing the problem it was returned for, would they? So if it's an issue of trimming some plastic, or swapping a diode, it should be solved. And if for some reason the problem isn't fixed, it's already failed, so it should be apparent upon arrival, not lurking to trouble me months down the road.
Reviews from people with fully functional samples are outstanding for this keyboard. And it is built pretty solidly. Between mechanical switches and the firmly attached double set of cables, I'd expect this board to last nearly as long as an old IBM Model M.
Is this a terrible mistake, or an opportunity to increase my chances of beating the factory quality lotto and getting a great keyboard at a decent price? Tell me what you think.