This is a well-priced re-issue of some of Sonny Rollins' 50s material, considered by many to be the best period in his career. You get a lot of music for a low price; but these are not the best four albums from this period: Saxophone Colossus is a must of course, and Plus-4 has its merits (in particular the fine trumpet playing of Clifford Brown) but the two volumes of Sonny Rollins are merely average compared to some of the other great material Rollins was producing in the same period: the albums Tour De Force, Tenor Madness, Work Time, The Sound of Sonny and Newk's Time, which aren't here, are in my opinion all superior to Sonny Rollins Vol 1 and 2, which are included here; yet they're from the same period.
However, there is an 8-Album set (
8 Classic Albums) that includes all four of the albums here, along with Tenor Madness, Tour De Force, Moving Out and Work Time; for less then twice the price of this four-album set, rendering this one rather superfluous.