7/4, you are a saint, obviously.
I've never made it all the way through Trillium R. His attempts at Minimalism leave me me wondering "what the hell is he thinking?" and I have plenty of experience with the best Minimalism in the man made world.
I lost touch during the Ghost Trance years, eventually I got it, but there's a bit I haven't heard.
I don't remember getting all the way through For Four Orchestras [Composition 82], I should try again this Summer. Same for Trillium R.