It turned out that playing/blundering through a prelude-and-fugue a day was a bit ambitious ... the 48 day tour turned into a six month adventure. Can't wait to go back and explore it all again.
I own the Schirmer edition of the Well-Tempered Clavier Books 1 and 2, and I love it. The fingering suggestions are excellent. There are a few intermediate pieces in here, but this is mostly for the advanced piano player. The Preludes are gorgeous, and the three voices in the fugues are an absolute delight.
Actually it's the Associated Board book edited by Tovey but I want to start listing my music as a way of sorting it out and practising any unlearned music I have lurking in my filing cabinet. There might be some stuff for sale too.
The praeludiums (sp?) are a lot of fun if you play them slowly and not to Bach's time! He really works out the fourth finger in one and five. That is as far as I am in the book right now....