for what it's worth i was always a big fan of warrior tanking, though it takes a lot more concentration than a pally tank. however, i've had way more success with my DK tank than my warrior tank in this expansion, he needs a lot less healing. warriors might still be considered better for raid bosses with dedicated healing, but for trash the self healing blood DK and WoG prot pally can't be beat in cata. dont know enough about feral tanks to comment.