Best spec for PvE and PvP while Lvling??

I have duelspecced my hunter. MM and BM

But before i continue i was wandering what is the best spec for PvP while im leveling?

And also what is the best spec for PvE while leveling?? like what puts out best dps.
Survival was best dps pve leveling i always outdps'd most people. B4 trap launcher get good at setting explosive traps close up to big packs and disengaging followed by multishot spam. Survival is nice in pvp while leveling too, do not underestimate lock and load for pve and pvp too. GL
I just hit 85 using survival + MM since 30. Survival rocks IMO for both PvE and PvP all the way to 85. I love the CC ability of survival, and the lower damage versus MM's aimed shot is more than compensated for by survival's enhanced mobility.

At 85 survival seems subpar compared to MM (the aimed shot + chimira shot combo hits like a ton of bricks). Now at 85 I feel like I have been forced to play MM.

BM is fun too once you get BW and a nice exotic pet, but before that is lacks IMO.

But honestly, I would pick the spec you enjoy most and play that.
survival is dead and gone...MM or BM pick one they're both very good, different play styles..although MM is favored
I think you can pretty much level as what ever you want. With MD glyph once you get MD threat is never an issue, although with BoA gear until then threat can be a problem. BM at lower levels seems like the better route as you have almost no down time and can pull a lot and be just fine. MM once you have Rapid recuperation and Rapid killing is great for moving from one mob to the next. SV for leveling doesn't really offer anything special untill Serpent spread, but that doesn't mean you can't level in it.

As for which scales better for DPS right now.... your guess is as good as mine but I have been hearing from a few guildies wile leveling that they are getting insta-gibbed by MM hunters in PvP.
If you want to pvp and pve with only 1 spec, pick BM and spec into pvp.

with BM pvp spec, do pve is easy. Pull out tenacity pet to hold aggro and kill.
with BM pvp spec, do pvp is obvious sent out big red pet and chew them out.