Dura Ace all the way.
A lot of FSA cranks don't do well with reviews, and this one (K-force carbon) has 40 so it is a better sampling than something with only a couple of reviews.
http://www.roadbikereview.com/cat/dr...7_2491crx.aspx
K-force mega exo
http://www.roadbikereview.com/cat/dr...3_2491crx.aspx