5man Healing

Hey guys most likely been asked to death but Im going to be abit more specific. Im returning to WoW after 3 years away from the previous free server. I want to roll a healer but I am purely going to 5 man. I have no intrest in doing raids and I will eventually dual class into pvp. Im stuck between pally druid or priest. I have no experience as a healer or pally. I have played an Spreist, but I'm leaning towards druid for feral pvp endgame (experienced rogue). So my question is what would be the strongest for purely 5 man. I know I skipped shammy but I hate them.