So I just faced this on PvP Battles:

Xu-Fu, Cub of Xuen
Unborn Val'kyr
Spring Rabbit

I found this setup so OP I thought it was worth sharing, btw let's get a PvP Comb thread going? I will update this post with all the good setups you guys reply!

Most chooses Earth as its the most annoying tamer to fight in general oppinion. But I should mention, if you do the dailies offered by each of the 4 spirits, youve a chance to get their respective pet in the bag. :O Cool didn't know that! Was already pretty sad about thinking I wouldn't be able to ...

So I'm currently working on the quest and I noticed I can choose 1 out of the 4 Pandaren Spirits.

Pandaren Air, Earth, Fire or Water Spirit

I was wondering what the best option was. I hope one of you guys could help me out?