As for my comment about the channel...I think what really makes me apprehensive is I have broken bindings by whacking them on rocks buried in powder and I wonder just how much abuse two screws and the channel can take... If it makes any difference I would be using adapter discs and not actual EST bindings. I'm guessing you don't have any complaints about the channel though Supra?
Nope, no complaints here about the channel. Going back to regular 4x4 boards sucks because I have to hope my stance width matches the holes. Also, there's no reason you have to get est bindings, adapter discs work fine. In fact, I much prefer burton reflex bindings to their est counterparts.
I rode the ultra dream and while I liked it, I like the Sherlock so much more. btw you won't be losing edge hold/responsiveness on nonpow days on the ultra. It doesn't have the gy's pow rocker.