Yeah, problem is that certain information about the remastering / recording process isn't usually available. Labels are not responsible in any way to be forthcoming about taking shortcuts or making compromises, you take your chances. Fortunately, where I live we have brick and mortar record stores where someone will say, 'No don't buy the later Led Zeppelin remasters because they are compressed and the remixes differ wildly from the originals'. I will say that I feel more vulnerable on Qobuz and that's why I trust when people comment about the catalogue being a mixed bag. But there are plenty of options on Qobuz for twelve dollars a month so, 'whatta ya gona do'?