Very fun class overall, likewise I've parked my Paladin in favor of rushing my DK to catch up with my Shamans. Now i'm in Northrend blowing things away with the group, and things are going really smoothly. As stated earlier, it's like tanking as a Paladin (if you're Unholy) but no LoH or bubble crutch to fall back on when you aren't paying attention. DKs work really well in a mixed group too, but honestly it started giving me tension headaches trying to keep track of everything lol. I think the problem really comes from the rest of the guys having no gear. The DK was the only one with gear, everyone else had been RAF Boosted. Even so, with a DK in newbie gear, and a Resto Shm, Boomkin, Frost Mage, and Aff Lock I was able to clear all of Ramparts as soon as I was out of the newbie quests. Which, is considerably better than I did with my Paladin and Shamans initially. And there's just something so satisfying about Death Gripping someone and then blasting them away from you with 4 Thunderstorms.