Bands with no bad releases....

Suffocation

I don't think there is one song I don't like by them.....maybe Breeding the Spawn is hard to listen to on a shitty stereo or on the computer.
 
Machinae Supremacy has 3 studio albums, 1 soundtrack and a large webography. Should count as five albums.
System of a Down
Amorphis
Sigh
Strapping Young Lad



Oh, and Metallica.











...just kidding.
 
Hmm I can think of 2 bands:
Pyramaze. (Only 2 albums so far, but they're both amazing and I'm sure the
next one will be so too).
Evergrey. (Every single one of their albums is a masterpiece, including Monday Morning Apocalypse which is extremely underrated).