I am in Zf,currently near lv 46. All my pulls when having no cds are usual 4-6 mobs (The Sm cath were 5-10 in comparison). When i have arcane power ready and presence of mind, I can usually pull around 8.

Make sure to utilize nova to get em round up roughly. Tried frost, but requires too much work for too little reward. Might work in Brd for farming tho.

Full arcane is so much easier due to bit extra crit, mana.