What are the most "desired" classes in TBC for raiding?

Long story short, I am giving TBC classic a try and want to play a class that will give me a chance to secure a spot within a nice raiding guild. I enjoyed healing as a holy priest in classic quite a bit, but am a little hesitant to play priest a second time around. I would prefer something that can dual role as I do not want to be locked to solely healing/dps/tanking. Being decent a PvP would be an added bonus. Thank you!