Niner SIR 9 - all the modern cool stuff (disk brakes, 29" wheels, tapered steering column, 142x12 rear axle spacing, BioCentric bottom bracket, and made out of 853 dzb and Reynolds 631 tubing). I think this will be my next mountain bike.
That's an excellent choice.
I'm looking at a Niner as well, the Air 9 RDO in black.
Trying to decide on the 4 star or 5 star model.