I bought the full Paul Simon Rhino box set, and every disc is substantially better than the originals. Even "you're the One", a very recent recording is better from the Rhino box. As a bonus most of the discs have additional tracks with some very good stuff, including slimmed down versions of songs which provide insight into the evolution of the song from the sparse arrangement to the full-blown arrangement we heard on the original release.
Also, the Rhino remastering of Little Feat's "Waiting for Columbus" is the best sounding Little Feat CD in my collection, far superior to the original CD. Only the MFSL vinyl can compete with it, if you can find it. Again, the Rhino re-issue provides all the material on the original 2 LP release, plus previously unreleased material.