DoD is the worst recording of Maiden history. It is tonally so wrong that even its DVD version, in which the loudness war is not an issue, does not save it.
AMOLAD recording has a nice dark atmosphere that fits the theme, but technically the voice of Bruce is suppressed too much.
Brave New World is polished a bit too much in the mastering, and therefore sounds a tad bright, but I think it is the best Maiden recording up to date.
BoS is really good as well: it is the most analogue sounding album, with slightly harsh guitars and snappy drums. I think they tried the same thing in Final Frontier, but it was less successful there.
Virtual XI and X Factor I would say have worse production than DOD.
I love the bass and drums sound on TXF but the guitars are basically non existent and so thin unless they’re playing melodies or solos