[Icy]

Powerhit is the best to invest points in. Power, Cooldown, and SP Consumption. It has a 6 second cooltime which is considerably better than devastate. At level 5 Power Hit its I believe 600~800 addition + 350ish for power enhancement. The power bonus increases as the levels progress so by level 80 you have a nice technique that you can use every 4.8 seconds with comparatively small sp-consumption that deals 1000 ~ 1300 damage base plus a very large power bonus.

(Power hit can't stun. Power hit can't damage and stun more than one target. When you're tanking a group of mobs/clerics, what would you rather use.)