The Charlie Slasher is unsinkable. For a pure pow stick, I'd go that direction. Like Nivek said, the Ultra Dream would be the best of the three all around and the Snake would be the best in tight trees, but you're looking for a dedicated pow stick.
I've hung onto my CS longer than any board I've ever owned. It'll be facing it's first challenge for a spot in the quiver this year now that I've kind of fallen into ownership of a Slash Straight. I doubt I'll keep both. One will likely end up getting dealt.
"People say that marijuana smoking is going to get in the way of my career. I say to them that on the contrary, my fighting career is getting in the way of my marijuana smoking." -Nick Diaz