The 1CD version was a complete waste of time. No way can 1 CD do her justice. There should have been a 2CD 'Standard Edition' and then a 3 or 4 CD 'Special Edition'. I remember reading on a forum somewhere that all of her singles would just about fill 4 CDs.
I remember when Celebration came out none of the supermarkets even sold the single disc edition. At least not around me anyway.
I also don't like the random edits they used throughout the album. It wasn't 'Immaculate Collection' territory, but they could have used some hard-to-find single versions instead.
The single disc did have better artwork though. The whole single cover montage was brill. Better still when it became apparent that half of the single covers used weren't even featured on the album!