Well, they definitely have more than 5 incredibly strong albums that are better than the vast majority of what is out on the music market. EP, Warning, Rage, Mindcrime, Empire, Promised Land, Hear in the Now Frontier, and American Soldier (minus points for the vocals) are incredible. Add the self-titled (first Todd era) album into the mix, and that's 9 incredibly strong albums. So, yeah, cracking the top 4 is quite a feat, IMO.