Best AA grinding areasFollow

If you had to pick the best most efficient spots for AA grinding (or spots if you had the gear to go to for group AA grinding) which spots would you pick on Serpent Spine, Depths of Darkshadow, and Prophecy of Ro?

In DoDh I've had good luck in The Hive and the spell arc missions. PoR I would have to say Relic has been pretty good to me and in TSS Direwind and Icefall Glacier have been the best spots I have gone. I've never been to Vald or any other ones. Also MPG is pretty nice aa xp if your 65+.

I want to clarify if you were level 70 in DoDh and PoR and 75 in SS for AA grindage. Also assuminng you have high end gear.