Music is great, I've never really gotten into Slipknot (only had 3 songs from Voliminal on my iPod until now) but this is really good. Only listened through the album once so far, can't even name individual songs let alone the good bits yet ;p
Production is great, vocals and guitar sound wicked, bass I can't really hear but I was listening on earphones and I'm used to not hearing the bass in metal anyway. Drums sound superb, so glad for some louder cymbals compared to some releases from last year where you can't hear the cymbals even when the drums are solo'd. Snare has some wicked air to it, there was a slower song that had periodic snare hits with a rather sparse mix..my god it sounded amazing. The sampling sounds really out of place though, especially in some of the fills. There's no way that people can hit as hard as they normally do when they're playing 16th fills at 200bpm. Toms sound a bit strange too...too loud, or too far panned (how the hell is a tom panned further away than a hihat?). Ignoring these 'minor' details of immersion, sounds pretty damn good!