Hey I've always been interested in duel boxing, but now with RaF I have to do it!

I was going to level a druid anyway, but now with Raf I have to decide which other class to choose. My options from which I like most to which I like least are Druid/Pally, Druid/Lock, Druid/Priest. The reason I'm hesitant about druid/pally is because they are both melee (or at least the specs I would be). Do you guys think druid/pally would be good or should I go with one of the other two combos?