This album was my introduction to Yes way back in 1977. I owned the vinyl, I own the recent remaster, but this edition completely and utterly makes them obsolete. I hoped the new mastering would be good, but not this good! I actually heard noises and sounds in the songs that I never heard (like Jon humming along to Howe's solo in "Parallels").
The sound quality alone should enough to convince you to replace any previous version. But the extra tracks and the insightful liner notes are icing on the cake. "Montreaux's Theme" and "Amazing Grace" were previously released. "Vevey (Revisited)", released in an edited form in the past, in here in full. The rehersals, especially for the vastly underrated "Turn of the Century" are really great.
It's about time that we have a Yes renaissance, and picking up the original studio albums with this quality (and at this price) are a great way to begin.