Upgrade crankset worth it?

richiegwy
richiegwy Posts: 171
edited February 2013 in Road general
I have a a SRAM S300 crankset on my otherwise SRAM RED Black edition Look 566 and am wondering is it worth upgrading to something like a RED crank or similar?

Would I notice any difference and what would that be?
Shifting quality / speed or .....?

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