I think the majority of custom bike customers are after 2 things....the custom fit based on their measurements and in most cases they have a appreciation of more classic looks and materials which are not being provided by high end production bikes A third thing is a bit of unigueness/specialness....I can envision a Dave Kirk custom someday (after kid is out of college) but don't ever see myself with a Specialized S-Works Venge or a Ferrari
__________________
Life is too short not to ride the best bike you have, as much as you can.