I´ve changed my 2010 Merida TFS100D XC for this beauty, and the diference is awesome.
Bike check:
F800 SL CAAD5
Fatty Ultra
Hubs:rear Magura PRO with titanium Kore quick release,front Echo with sealed bearings
Wheels: Mavic 223 disc only
Tires: Hutchinson Acrobat 1.95
Gripshift,front and rear derraileur:SRAM X9
Chain:SRAM PC-971
Rear cogs:shimano SLX
Brakes:Shimano XT
Disc Brake: Avid G2CS
Stem:Truvativ AKA oversize
Handlebar:Ritchey comp
Seatpost: Ritchey Pro
Crankset:Truvativ Firex with...