"One" is one of the classic U2 songs, and the accompanying B-Sides make for a great EP of sorts. Of particular merit is the song "Lady With the Spinning Head" which is as good as any track on "Achtung Baby" If you haven't figured it out, U2 records spectacular B-Sides, and this song is no exception.
I also enjoy "Sattellite of Love" and "Night and Day". "Night and Day" is an especially interesting recording. It is not the typical one you hear on the old jazz classics in that it is definitely kicked up to U2's pace with a rock edge to it. Yet, this version is great, and I am sure Cole Porter would be proud.
Definitely worth buying.