I have done 2 builds lately and both have used the new RaceFace X type BB/crank system. Atlas on one and Dues on the other. Boy I think they are on to something here. The Atlas is massively stiff and I like the way they installed. Very cool system. When I get some money I am upgrading. Time will tell how they hold up but I get the impression they are built to last. Anyone else got parts they lust for? ......jdcamb