Stainless is a waste IMO. Have a buddy that spent hundreds on tools and materials to make bars for his motorcycle... If you want to be a unique snowflake ride harder/more often and invest in parts to replace those that don't fit/are broken/worn. That being said, Major Taylor or other "old school" bars can really add to the look of a bike as well as add comfort if they fit. Copper would be cool, if it were a suitable material, which it is not.