I like two things about the SRAM cranks - GXP is IMHO a better engineered design than Hollowtech II, and the removable spider with splines. I run a budget OEM version of the cranks - the 2011 S1400 - which was btw. exactly the same crank as the AKA, X.7 and X.9, and I like it a lot. Removable spider == new options like the Bling Ring for 1x10 and 1x9 drivetrains.
And once you go XX the spider gets integrated into the right crank. That's a massive 30 grams savings. You see why I'm not upgrading?
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