THanks for your in depth responses.
Did you know the lightning plug may (almost certainly, without opening one) have a little DAC in it? I want to explore this further before i say im certain of it. But so far its a safe assumption.
As far as the casing question goes, Id simply prefer to remove all variables, and quite enjoy the finish on the endplates.
I personally like "raw" materials. It the case could be raw in a way that it is durable I would prefer that myself. The cases look excellent, but if the finishes come off like my current one I'd pass completely on anodizing. Buy anyhow, I just love the sound!