So the YouTubes went down for an hour or so yesterday and I missed the whole thing. I redid my upstairs audio setup a month or so ago and I haven't done any critical listening with it. Naturally I queued up a couple Biosphere albums.
Substrata (1997, but this is the 2017 web release).
Cirque (2000 version, I don't have the web re-issue yet.)
The former is arguably the greatest ambient album in the world, and the latter is no slouch. Cirque is really, really good. Substrata is ...transcendent. It's unlike anything before or after it.
I'm actually not huge on 2002's Shenzhou. It's full of weird classical music samples that get old quickly. That said, iTunes played it next and I bothered to listen to the whole thing. I'll say this, the not-annoying parts of the album are actually quite good and require some effort on the part of the listener to be appreciated. That's not really surprising, given the artist in question.