I used to have all the Rijff "Inside" books, as well as the "Roustabout" and "G.I. Blues" ones. The latter ones are definitely nice sets to have... liked the memorabilia replica thingys, especially the vinyls platters although I seem to recall that they only contained radio spots. I just happen to like vinyl records.
The Rijff books were super cool, and without any doubt worth their reputation. I'd say they're easily among the greatest Elvis (photo)books ever published. Tons of fantastic, unpublished photos of EP, with great layout.