The Good: The most balanced trail bike I have ever ridden. I rode this bike as a demo over a 4 day period. I cleared stuff I never had before, had more fun doing it, rode fast downhill, climbed tough choppy technical, and just felt safer and more comfortable doing it. While the test bike weighed in at around 29 pounds, I never felt it climbing because the bike was so efficient. The single pivot is stiff and just doesn't flex at all.
The Bad: Having to choose between a Medium and a Large. I am 6'-0", right on the cut point for either frame size. As Brent Foes said to me, "You could go either way. Buy a Medium for climbing if that's your thing, or a Large for a more downhill oriented bike." I bought the Medium. It was the demo bike size and I flew downhill with no problem anyway.
I bought this bike immediately after the test rides. To me, it is the best handling trail bike I have ever ridden, and I have ridden many, many bikes.