I'll agree with Sepultura. Sepultura 2, Neo Sepultura, whatever you want to call them aren't as good by a long shot.
Also if you were to take all the best songs from The Burning Red and Supercharger and put them on one album then Machine Head would be on this list too. But no they had to go and make two debatable albums with only a handful of good songs on each.
I think in Thrash-metal are the most consistant bands like Overkill, Exodus, Testament, Kreator etc..
In every other genre are also good bands but they don't deliver constant good quality.
yeah.. for someone who just knows (and likes) the band for it's Thrash-albums
they aren't constant but I even like Outcast, Endorama and Renewal.
Force of Habit is also not one of Exodus best Releases but there are some good songs on it though..