i chose the AV way also, between 4 and 7 hours a level and it's pretty easy and fun mostly. SUCKS when you get back to back 40 minute games though. That really hurts the leveling pace. 61-70 is total crap xp, don't bother unless you die for pvp. I actually boosted my team from 62 to 70 in about 10 or 12 hours i think on northrend mobs. that probably includes being camped by 80 allies from time to time also.

I been grinding AV like crazy with my 75's hoping to hell they don't nerf it. It's better than all the other bgs' by far xp wise, mostly because 10 minute games net you anywhere from 75 to 150k xp.