human is what i'm going with. you could maybe argue that the +spell crit (erudite) may help with avatar of destruction, or gnome procc chance could help the top end. maybe high elf +mana regen for more spells over a fight....but i think the resist adjust on human will save your ass in a mezz fight. +1 haste could help with proccs. + faction hit - mag receive on human is all pretty dope for the long run.
Pre-re-release, i would have made the case for the melee crit because in the old server 'cascading bond' made YOU hit almost automatically and double attack, and coupled with OP proccs and wacked out ratio caster weapons...could lead to some impressive dps, but now cascading bond is 'doppelganger' which makes your pet attack with your weapon, bypassing your melee stats.