bands with flawless discographies

Don't know if it was said but Kalmah has all great albums IMO. Death too but Chuck took different styles on each album, so people are bound to hate specific albums and styles they don't like.

I would disagree. While Kalmah's first 4 albums are majestic masterpieces, their newer stuff is far inferior in everything: riffs, song writing, melodies etc.
 
really great track record that band, not many can make 8 albums and an ep that are of that consistent quality