For me the" smile on my face " comes from doing the best job I possably can ,and that includes astethics and attention to detail in a somewhat hi degree. For me looking into an engine compartment and seeing decades of filth ,the wiring attempts of the last five owners, and the glue remains of an insulator pad on the firewall is unthinkable, no matter how well it runs
I personally am not intrested in concours. Predictable cars and ltd. option packages. I'm drawn to the customs. If a person wants to have a subaru engine or a Porsche hood crest, or polished cases, do what pleases you! All IMHO.