Why you bought it and What you like most about it - more than greatest hits vol. 1 or greatest hits vol. 3, this collection really represents both a set of popular hits and his style from different period. What you dislike about it - I haven't found it yet.
I bought this 2-CD set for one song: "It's All Over Now, Baby Blue." If you like Dylan you probably already have most of these songs. I had that song by Marianne Faithful (Likewise great) and Noel Harrison (not bad but it's the song, not the singer). Dylan is obviously fantastic on his own song and the harmonica part will blow you away if you have never heard it before. Not as good as the live version he did on "Soundstage" but I don't think that is available on CD.