I'm building up a set of race wheels and would like some advice about the rims. I'll be using Record hubs and CX Rays with brass nipples. Rims - is there any real difference for the DTs vs the Mavics? I guess what I'm asking is, is the tiny aero difference of the CXPs something to consider? Yes, I know I'm picking nits! But I lost my last race last year by 0.12 seconds, and I can't afford deep-rim carbon wheels. Also, I'm not interested in prebuilt wheels; I want something that is rebuildable and hubs that will last a long time. Any thoughts? Thanks.