i found that a blood DK or a bear out dose a prot pally for most boosting. with the changes to pallys and the buffs to bears and adding the "new" class DKs that if i'm going to go boots some where i take my DK or druid both seem to have way better dps on aoeing mobs down. found that my blood DK can take more damage and aoe mobs down faster than a prot pally. and bears with there no limit swipe do a pertty good job on healing this self's do to the healing proc. they get from talent.
just my 2 cents.