I've been fire for a while, all the nice arcane haste gear simply hasn't dropped for me, or if it has, i've lost the roll. So I'm a bit out of the arcane loop. I'd like to spec arcane focus, compared to fire it's very inefficient so I'd like to save 3% on mana - the hit would be nice too. But I've had 4/5 arcane stability in my arcane spec since ICC came out.
How important is pushback protection in ICC? Should I make it a point to have stability, or just go with focus?