...Other all mountain boards:
I have the GNU B-Pro, and it is fast (compared to what I'm used to riding).
The C2BTX took some getting used to for me, since I learned on/was accustomed to a reg cambered board; the biggest challenge was in the tendency to "override" it, for lack of a better description.
But I've found it to be playful, responsive, and almost intuitive...I swear it's like a dialogue happens with this board - in a way I've never experienced before. I feel I can progress with it, too, so it made the investment worth it for me. Got it late in the season and I can't wait to ride it more.
It also has magnetraction, which is a nice option for the east coast. Also, a portion of Barrett Christy's royalties from the board go to Boarding For Breast Cancer, which is a cool, charitable thing imo.
You might be able to find it on sale within your budget. Several shops have told me the Roxy Eminence was similar (when I was trying to buy the B-Pro locally and they had the Eminence in stock) but other than knowing they're both Mervin products, I haven't researched it fully.
Good luck with your purchase and (early) congrats on your new board!