I've had some success with nzoth priest (hit my highest ever rank with it!!).
Never managed to get dragon priest to win, though I love the cards and really want to make it work. I always get swamped, how do you play it and what deck are you using?
I'm using my own pretty much, I'm sure it's similar to most net deck varietys though. Will get a list up later when on computer.
Playing it really just depends on who you are against.