That's awesome, thanks for the link.
Have you tried Hubert Kappel's transcription of Bach's 6th Partita BWV 830, Tilman Hoppstock's Toccata BWV 914, Philip Hii's Toccata and Fugue BWV 565 or Chromatic Fantasy BWV 903? All are several orders of magnitude more difficult for a guitarist than they are for a keyboardist! I love Eotvos' Goldbergs even though they are much slower than typical keyboard performances.
Here's a really gorgeous harpsichord piece played on classical guitar. Mysterious Barricades by Francois Couperin: Mysterious Barricades. I adore this piece so much. Maybe some day I will get a classical guitar and just learn a few pieces using tablature.
Here is Bach's Chromatic Fantasy and Fugue: (all three sections are available)