A lot of complaints from the other version of the Essential Ozzy are about it not covering the Ultimate Sin album. On this, the third album covers a few tracks from it, as well as 2 tracks from Black Rain and the Kelly Osbourne version of Changes. The Third disc is short and there are still several tracks I would like to have seen included, however, it's still an improvement on the last Essential Ozzy , which was a very solid set to begin with. All of the tracks on here are the 2002 remastered versions. To me, however, they sound fine (Bark at the Moon tracks suffered the most though). If you get this from a seller, it's about the same price as the other Essential Ozzy and a better purchase. It comes in a digipack case, which is my only complaint as far as packaging as I prefer plastic cases.