I like that bike, looks nice. I would not recommend getting an XTR drivetrain. Personally i try to avoid shimano stuff, i think its grosly overpriced. SRAM is cheaper and just as light if it matters. It looks like your more into XC so i can definantly recommend Truvativ Stylo teams. I got these things for 95 on ebay, i love them! Stiff, and almost as light as the XTR. I think the different is not even 20 grams.