Yep, I would tend to agree with that. The two non-Nichols albums have a much more 80's pop-prog feel to them, and I don't spin them much as well, though I love Common Ground. I would consider the must have list to be The Seventh House, Subterrenea, Ever, and The Wake. I'm not as much of a Dark Matter fan as others, but it's definitely worth owning. Tales from the Lush Attic is a solid album, proggy as fuck if that's your thing, get the 30th anniversary re-release, sounds a bajillion times better.