For me its all about the look, rather than the function. If you are after a nice shinny engine bay , then ss works. If its not such a concern , i'd just make sure the lines are E10 or even E15 proof !!... With more Bio fuel being added these days to standard fuels, the fuel line just rot from the inside out... The other concern is the bore of the pipes, important to keep flow rates as high as possible. I had one 'burst' in the boot , with dramatic effect ...