50/34 with 12-28 (11speed)
I do a lot of hills and I want to keep the rear cassette fairly closely spaced together. Hate big gaps. I slightly miss the 50 / 11... but I'd rather give up the 11t for the 16t.

11-28: 11-12-13-14-15----17-19-21-23-25-28
12-28: --- 12-13-14-15-16-17-19-21-23-25-28