From a neutral perspective, how important is the OEM in the grand scheme of keyboard things?
Assuming the same level of QC on the part of the brand (say, Filco), would it matter if they changed vendors? Conversely, if Filco was suddenly bought up by investors whole tried to milk their reputation for maximum medium-term profit by reducing QC and more or less turning a blind eye to what Costar was sending them, would there not be a significant tail-off in the end product?
I know there are a small number inherent differences (Cherry vs. Costar stabilizers, for example), but what else is there?