I’ve liked Niners for years. As their name indicates, they only make 29ers. Their people at the MTB festivals are really nice and helpful and the frame designs are good. They ride well. However, they haven’t produced a real trail bike until now, and the WFO 9 is a great ride!
The model I rode had the 150mm Rockshox Pike, alloy metal frame, 1×11 XT setup, and the Reverb infinity dropper. The head tube angle is 67 degrees, nicely between XC and all mountain. It weighed in at 29.5 pounds, not bad for alloy and a large frame.