Goldenpoint The Extreme Motion will provide more power on smashes than the Pro due to its head-heavy balance. However, the extra weight may sacrifice control and maneuverability. The Pro offers a nicer blend of power and control for all-around play.
I'd recommend trying out the Pro first since you already have it. If you are still lacking smash power after adjusting to the added mass, then you could consider switching to the Motion. But don't give up too much feel just to maximize power - try to find the right balance.