I was frost the whole time leveling, and through most of my heroics. After the last talent reset I went 0/53/18 and am debating an 18/53/0 TTW build. Frost just isn't competitive atm, and even without using the instant pyroblasts I still saw a ~100-200dps increase.

I have sounds turned off on all my slaves, so I guess Power Auras really is the best bet.