I agree with you about the "quality vs price" issue with formal shirts sold by Brooks Brothers; I am also put off by the limited range offered in their shops. My experience in buying on-line from Eade and Ravenscroft has been one of total satisfaction, with delivery usually taking five business days.

One place you might want to try is one of those "custom shirt" shops that one sees in larger cities, and advertising in the back of in-flight magazines.