I've only heard a few select songs by these guys and I can't figure out what the big fuss is. A few of my friends swear they're right at the top of the prog-metal scene with Dream Theater et al. All the press I see about them suggests their the best Metal band on Earth.

Whenever I've heard them I couldn't help but think they were a 1991 Death Metal band all over again. I just can't seem to get past the "pissed-off metal growl". Is this only used in a few songs? Where's a good place to start with these guys if I want to give them a chance?
I had grown bored of the hardcore for the sake of being hardcore Beastor Growl a few years back, but I suppose if the music's there and it's done well I could appreciate it.

Alot of people who seem to have good taste in music here endorse them...so I'm ready to try again. Please point me in the right direction.

edit: poll option 3 should read "cheese metal" not "chesse metal"...my bad!