Build list:
-Cervélo S2 2012 frameset, size 56
-Wheels: Mavic R-Sys SLR, Mavic CC SLR, Shimano RS61
-Groupset: Shimano Dura-Ace 9000 11spd
-Cockpit: Deda Elementi Z100
-Pedals Look Keo Blade Ti

The Cervélo S2 frame is not the lightest and certainly not the stiffest (front-end) aero bike but comfort is very nice.
I've chosen the Mavic wheels as the were 11spd compatible, I like their looks and the braking is very good.
After I've been riding Sram Force and Red, Campagnolo Record, Dura-Ace 7900 and Dura-Ace 7900 DI2, the new Dura-Ace 9000 is the best ever.
The Japanese leave Campagnolo far behind. I might even say front shifting is as fast and easy as a DI2 groupset.
An dI think the Japanse developped the best cable sin the world. Shifting and braking is so smooth.


Pictures:

I find it especially nice with r-sys (love low profile rims).

Very nice build The R-Sys wheels actually look pretty nice on an aero frame. This is just me nitpicking but the crank looks a bit out of place, aesthetically speaking of course, and I could never get over the look of the cable routing in the front where they stick out over the stem and enter on the top tube. Regardless, great build! Enjoy it!

Funny with the R-sys, must be one of the least aero wheels every on one of classic aero frames of our times. I still think the S2 looks better than pretty much everyone's aero frame and aside from the stiffness is probably just as good or better. Love the black/red paint on that one too.

What's your saddle height/setback/saddle-bar drop/ saddle bar distance?

Thank you for your comments.

Regarding the crank, I was thinking of putting on a Rotor 3D and try Rotor chainrings.
On the other hand the new Dura-Ace 11spd crank is so special. It shows you are riding an 11spd Dura-Ace equipped bike
and that's nice to show off

Saddle height is 77cm center BB - top saddle.
Distance between tip saddle and center handlebar is 55cm.

I'm working on an 11spd DI2 Dura-Ace equipped Kuota bike too...

nice, thanks for the measurements. I agree, love the DA 9000 chainset!