I became a huge fan of Sepultura since their last two albuns: Roorback and Dante XXI. Their playing is just as raw and heavy as no other band and the mix is just so natural that you just can't believe it is a metal production. I know there's a thread here about great drum sounds made with no samples, you definetely should check these albuns. At first sight it doesn't seem that heavy but when all the instruments are playing, man, it's just superb...it's kinda of an alternative way of mixing in this days of "standard sounds" in heavy music and when played live it doesn't seem tiny. Check it.