I have a 70 Hunter thats 17/44/0. I got increased pet armor and AP in the BM tree and went with all the AP and Crit increasing things in MM. I think it gives u the best of both. I can do mass damage, (3500 crits w/ aimed shot) and with a  good tank pet (scorpid) he stays alive and does alot of damage. Im always near the top in DPS/KB in both raids and BGs.
I've never tried survival so idk how that would fit in, but a BM/MM mix either BM or MM heavy is the most well-rounded Hunter that can be very helpful in BG/Arena and Raids.