Pink Floyd best CDs soundwise

Hello Goners. I have a nearly complete collection of Pink Floyd on vinyl, mostly regular pressing, mostly old pressings, and they sound really good. Recently I decided to get them on CDs to use in my car and to preserve my vinyl a bit. I was surprised to hear really crappy sound. These are regular versions. "Dark Side" is mediocre, "The Wall" is barely OK, so is "Final Cut", "Wish YOU Were Here" is plain unlistenable - dark, un-transparent with barely a hint on highs, "Animals" is the same way. Then I picked up a couple of either bootlegs or copies, probably made in Russia or somewhere near (:-)))). One is something called "Animals" with a slightly different cover, and it contains original "Animals", and it sounds like somebody tried to bring some life into it, but still "no cigar", BUT - it also contains original "Saucer full of Secrets" - and WOW! that sounds great! The other is something called "Complete Zabriski Point sessions" and it is a KILLER! I used to work in a studio, and this is by far the closest I have heard anything, whether on CD or LP, to studio masters. Now, music there is not really nuch to talk about, but the sound!

So I have two questions:

1) the latter shows that master tapes exist of excellent quality, then why production Pink Floyd CDs suck?

2) please somebody tell me which CDs or SACDs of Pink Floyd I should be looking for, if something of good sound qaulity does exist?

(I am not looking for anything they made after "Final Cut")

Thanks