The way of Carcass is the way of unstopable progress in techics and melody from album to an album: all their releases from grindcore to death are interesting and often innovative, videos - interesting and beautiful(especially "No love is lost" and "Heartwork"). The way of Cannibal Corpse is progress till "The Bleeding", and then musical degradation. On "The Bleeding" there are very different songs, you can remember every song apart from others (later albs are like mire: one big deathmetal tracks), there is even acoustic part ! And I think Corpsegrinder is a lamb near Chris Barnes.
Btw, Chris just recorded song with Ice-T. "It's not fuckin' rap, Ice-T wrote braincrushing lyrics, I loved it and we recorded this song. It's a big honor for me to work with Ice-T"-he said. I consider rap apiece of shit, and I hope, it is really not fuckin' rap.