If you want a powder gun the Neversummer Summit is definitely the deep day slayer. It's perfectly capable on hard pack stuff too. Not great at switch riding stuff if you are in powder of any consequence. With the set back, it's hard to keep the tail up.
My Heritage is great for that switch stuff in pow. I am so not used to being able to do that, as I've been on very directional splits for the last 5 years. It's also not going to be as good in the really deep stuff as the Summit is either.
The Venture Storm is another pow oriented board you might look at. The Venture crew, like Neversummer, really give a shit about how their product turns out.