nine inch nails:

pretty hate machine: B+

broken: A
fixed: A+

march of the pigs: A-
the downward spiral: A-
closer: A+
further down the spiral v1/v2: A+

the perfect drug: A-

the fragile: B   (deviations: A-)
things falling apart: F
still: A+

with teeth: D

year zero: B-  (remixed: C+)
ghosts: B
the slip: D

hesitation marks: C-

trilogy: C  (jessica edit: B+)

do you see the pattern?