Would going from an SR SCX 200 Crank Set to Suntour Superbe Pro Crankset be a real upgrade? I was thinking of upgrading my crank set if I can get a good deal on a Superbe Pro. My bike came stock with a SR SCX 200 crank set that looks a lot like the Superbe Pro. I see people comment about great crank sets but I am not sure what constitutes great? What would I gain? Is it just looks and a name, or is there performance enhancements?