I just purchased a pair of Sidi's myself. Probably my best cycling purchase to date, whith the exception of my bike. I have larger than average feet for a woman so I had to go to a man's shoe. I ended up purchasing the Genius 6.6 carbon. Not a cheap purchase, but a great one. The fit is exceptional and I feel as though with the stiffness of the sole, I get much more power to the pedals. Any Sidi would probably be a great shoe. But for me, the light weight of the carbon sole and the overall fit made the price worth it for me.