I agree. I had one of these before selling it to move to the f/4L. I shot both of them wide open probably three quarters of the time, and thought that both were super sharp. It'd be a great lens even for 100 clams.
"Truth and love are my law and worship. Form and conscience are my manifestation and guide. Nature and peace are my shelter and companions. Order is my attitude. Beauty and perfection are my attack."