Best Class for Me

I am trying to buy MoP and some game time, and I will be starting WoW again. I have only ever made it to Level 43 as a undead rogue. I didn't really like the play-style, and ever since then, in almost every MMO I try I am a tank class.
Not really sure what route is best for me to go. I feel at home in a tank role or a healing role. With that said, what race and class would be optimal for me? I am more of a PvE type of guy too, so keep that in mind.

 

Try druid, pally or monk they are pretty versatile and competitive at end game raiding or pvp and you can play as a healer, tank or dps with these classes.

 

Best choice would be druid, feral for good damage, resto for healing and guardian for tanking and balance for good damage aswell