Area/Demetrio Stratos: C or D

Does anybody know much about the sound quality on releaases of their material? Just wondering how the 2002 Edel versions compare to the 2009 cramps digipacks?
Also seeing the Edel listed as copy protected which presumably means i'd have trouble sticking them on my walkman.

Also how do people rate the various lps?
I have the late 80s version of Caution Radiation Area which sounds pretty weird despite the low volume and not perfect sound. Did they get straighter from that point forward? Is it better to start earlier if you want weirder and only get the later stuff once you've got into that or are they all great?