Dude, I love my mountain biking and for me I was converted to Specialized when I bought a frame only Enduro and added my parts.
youve not said what kind of riding youre gonna be doing but I do cross country, downhill, and a few epic rides every now and then and the Enduro can do it all.
Forget Rockshox, Marzocchi are the way forward, and IMHO the oil damped stuff rules, air forks are a lightweight excuse to change what REALLY works -- Oil damping!!!!, I also had a Chris King (fit and forget) headset and other major components were the Mavic tubeless rims with HOPE titanium hubs and Conti tyres and MOST importantly....!!!!!
I bought HOPE!!! and they were the NUTS !!!!
MATE!! I cant express how good these bad boys are!!!
I bought the "old" M4 - 4 piston caliper disc brakes but now they do 6!!!!! piston single piece construction, titanium piston calipers
DD - I want em !
check em out here: http://www.hopetech.com/
Just to illustrate.... a couple of years ago I rode the south downs way in southern England, its a 105 mile journey and is very hilly, I had the brakes literally smokin on the downhill sections 6 times a day!!! and the discs were going blue but they never once faded !!!!! I just changed the pads to EBC RED!!! its like puttin a stick in the spokes!
you gotta buy Shimano XT groupset (or better) and then you'll have no worries, tear ass around up or down hill.... the only problem now is your little legs :O .... and Lungs !!!!
Enjoy the riding mate, love the mud pluggin too, someone has to !!!