I've been playing all the classes, but have settled with Paladin, Mage, Shaman and Hunter as my go-to's. Mage is the only one I can say I have decent defense with just 'cause I can wipe all the opponents minions out if I'm starting to get rushed down. My Hunter and Shaman can't do shit when they're rushed down, but my Paladin can sort of deal with it alright if I've got my +1 Spell Damage minions out and have a Holy Nova.
And that's what pisses me off so much. I have the shittiest luck ever, so 8 or so times out of 10 the opponent's drawn everything they need to make my life miserable while I'm stuck there with nothing to work with.