I'd think Yes' Relayer would take some beating.
though that might have more to do with content than medium
Sure I'll think of others though.
for example any Radioactive/Fallout/Erebus cd with bad sound that blocked the release of a legit reissue with decent sound.
the Shaft s/trk from the last Isaac Hayes batch that replaced the 20minute+
trance version of Do Your Thing with the 2.15 single version. think that was a tragic mistake.