I just broke my drive side 180mm m960 xtr crank arm. It is out of warranty so I have to decide whether to buy a new arm (cheapest I can find is $220 from Bikeman) or go with another crankset. Since I can get a new RaceFace Deus for only a little more than the single XTR arm, it is very tempting. The other considerable factor I'm dealing with is that I have invested a good bit in Boone rings which will fit only the m960 cranks. I'm feeling sort of stuck with needing to buy a new XTR arm. Opinions?