Turbo hands down.
Harshmellow is gonna make it ride smoother, but since you're getting your dampening from that instead of just how the whole board is built it will also remain more lively. The hyper progressive sidecut blends an infinite number of sidecuts together, if you know your edges and can manipulate a board the grip and ability to push through chunder is great. And personally I prefer flat or camber between my feet, not rocker (with very limited exceptions).
If the OP likes groomers and pow would the ultra dream be a better option than the turbo dream? I'm interested in these two boards also and don't think there is much between them, aside from the ultra shape being tweaked more for backcountry and pow. It would still probably be fine on groomers too. What do you think Nivek, you've ridden both, right?