BM or Survival ???

This is very important question for me....which one is better for PVP - BM or Survival ???

I am currently Beast Mastery in PVP ,but a Survival hunter in PVE...As they both are making a lot of damage I am wondering which one is better ...

I still think that the BM pets are underestimated by other players and this is very useful in the arena and battleground battles ,but the survival hunters make a lot of DoT damage.

So I would like to hear your opinion :) BM or Survival ..and why is one of them better that the other ?