Update: I had ordered a EA70, not a EA50; I really don't see any reason to get a carbon stem, unless you folks tell me otherwise. I think a EA70 will work with the EC90 bars.

I really would like to keep the parts interchangeable with the other build, so I'm leaning toward Ultegra, unless Ultegra SL comes out soon. Any updates on it?

I tried out and like this crazy saddle: