I will add one thing, if you do get the Comp Disc with Sun DS2 XC rims then get tire levers ASAP!!!, yesterday I got a flat and had to use a screwdriver, my skewer and a little plastic thing from my friend's pump, it was a very unpleasant and tedious experience, I almost killed my friend when he realized his Topeak tool had tire levers... I never thought they were really neccesary until now lol.