Ratings:

. . . disaster (-/6)
(ok, this isn't lowest rating, but mostly comment on some band
changing genre from thrash to some prog or rock or even mallcore,
wich don't neccessary means that album is bad, but just isn't what we need...)

. . . poor (1/6)
(for those who are mostly run of ideas or not talented much)

. . . ok (2/6)
(they can pass, but they don't give much more than cheap fun for themselves)

. . . good (3/6)
(thrashing by the book)

. . . great (4/6)
(every classic album)

. . . excellent (5/6)
(most memorable effort of previous ones)

. . . masterpiece (6/6)
(arguable, as it is everybodys personal favourite, but I can be certain that I'm right with choices) :)

Rarities:

. . . not rare at all

. . . geting harder to find

. . . hard to find

. . . very rare

. . . megarare (