Berry was a wonderful/important tenor stylist. Everyone should know his music but most of it is in short sideman solos. If you can't deal with that, avoid the set. I had all the music (minus some alternates) already so I couldn't see going for the box, sound improvement notwithstanding.
If you can accept the big band limitations of the bulk of the set and want to learn about one of the founding fathers of the tenor, go for it.
YMMV.