I am thinking of getting a vintage chromoly steel touring frame to build a cyclocross/all around bike that I can use on road, offroad and for touring. Does anyone have any suggestions of which frames would be good and would accommodate wider tires (and I think I would need to go with smaller tires??), would have the braze ons, cantilever brakes (or could go with discs?). What size tires should I go with? Thanks for your input.