Stick with the Colnago. You may never again have the opportunity to own such a classic. You can always walk into any bike shop in any city or town and select a contemporary bike from a wide selection of models. FWIW, except for my Trek 7300 FX commuter, all my road bikes are vintage, the oldest being from 1962. I think they ride as well as any contemporary bike, the only difference being that they use downtube shifters vs. brifters.