The silver or black face is just a matter of preference. Personally, the silver face is harder to scratch, if by some reason that should happen.
Audio Research...
in buying Audio Research, specifically a preamp, assuming I don't personally favour one over the other, is it better to get the silver faceplate or the black faceplate insofar as ease of resale if upgrading (or downgrading for that matter, perish the thought)? Is it worth bothering? Any thoughts.