I guess I'd have to go with the RFs. Carbon fiber scares me.
I have to ask why spend so much on cranks. I've ridden alot of bikes and can't really tell a difference in cranks. My singlespeed has RF turbine LPs on it and while they look really cool I can't say that they do anything the STX-RC cranks on my old bike didn't do.
I'm not trying to be a nag or anything. I mean those cranks you're looking at are sweet, but I'd like to know what makes them worth that kinda money. I've heard people talk about cranks flexing but i've never felt it.
Oh, How 'bout a set of Shimano LX cranks. Nice and inexpensive.
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"only on a BIKE"