I definitely overlooked this when it first came out as I wasn't too keen on the vocals when I first heard them.
I was later sent a free copy and felt obligated to give it a proper listen, and holy shit..
One of the best albums I have ever listened to. The riffs are crushing, the song progression is insane and the harmony between all the instruments (and vocals) is perfect.
I have now bought the vinyl and promised myself to never let something like this almost slip by me again.