Well for this season I've been riding an option axis. Which is last seasons stock, and the wide version of their mirror. True twin but pretty stiff and performed pretty well around the mountain. Also it took ALOT of abuse, it lasted well considering I went out of my way to jib any and all dirt and rock I could find!
From my experience I also am a fan of Ride, probably gonna be on a Ride Crush next season. I've also liked the Gnu range, I rode the Altered Genetics top end all mountain board with MTX and thought it was awesome.
Rome also comes highly recommended from others.
A bit thing before you can get a proper answer though is what kind of riding do you see yourself doing? And how much experience riding do you have?