Its silly to assume that ALL frames are heavily raced and abused by pros. Some are; some could have just been owned by keirin enthusiasts who babied the **** out of their NJS bike. Who the hell really knows unless you speak with the original owner; or if there's a NJS frame version of Carfax around

. It is all personal preference and ridiculous to argue about what is worth what and such.
Look at what this Colnago just ended for on ebay:
http://cgi.ebay.com/ws/eBayISAPI.dll...m=170309958920