Steel Porch Worth the Price?

Hi all - Looking for advice on replacing a 3-story wood porch that is badly in need of repair.  Due to Chicago's building code, we would need to tear it down and re-build for it to be permitted.

Has anyone gone the route of installing a steel porch instead of wood?  How much more did you spend?  Was it worth the extra cost?  How has it held up over the years?