Well, spend the money then. There is an obvious disconnect between money and common sense with some people.
If aluminum is so bad, explain how late model cars run 300,000 miles on factory aluminum radiators. New cars run hotter yet they seem to stay under control with their "inferior" design materials as you allude.
It's not your money being spent nor your choice. Bob's customer service, his workmanship, careful detail, don't "beat around the bush" speaks volumes to many all over the place.
