Mikelavigne, That is REALLY weird you say that about the zeppelin re-masters, Just the other day I put on Zep II with the 200 gram 33's (Whole lotta love first track)Which I did not try out until about a week ago, and Whoa is what me and a friend were saying as well, its so much more explosive and the drum track especially sounds wide open and un-compressed, and the vocals are just ripping thru like its live, very different than any digital counterpart especially on certain bands..
I have found Zeppelin, Sabbath, Beatles, and many others cannot sound as real on CD as the vinyl versions,, But there are Excellent Digital recordings but mostly of much newer Rock bands.