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I'd go for DDs, but I'm not finding many people selling them - same with FSA Pro Carbons. I like the look of Rotors, but that's about it - they're probably not a great idea in the long run.
At this point, I think I'll go for Omniums or Sug75s (since I doubt I'll notice any difference between these and the DDs). Would omniums with a decent chainring be right for this build? I think I'm giving the cranks far too much thought.
You won't notice. Get whichever you like the look of more.