heres the list of his real albums: psycho active, xorcist, the unforgiven, vengance is mine, nefarious: speak of the devil, the initiation, city of kings: the sac-a-indo project.
there is also a good bootleg: deadly game, which also is the esact same cd as "these walls can talk"
the rest are greatest hits cd's, x-ology has like 5 unreleased tracks, and the x-files cd's are just his old albums under a different name, but you get 2 for the price of 1 which is cool, and i think the money goes to his own record label instead of black market.