I was hoping you'd get the 11-21 or 12-21 with your compact double instead becasue you don't even use 12-27 with your 53/39 normally.

11-21 10s: 11,12,13,14,15,16,17,18,19,21

12-21: 12,13,14,15, 16, 17, 18, 19, 20, 21 (straight block). To me this cassette would sacrifice some top end, but you'd have awesome gear selection right in the middle of the range.

Actually that 11-21 cassette makes me want to get 10s shifters again. LoL!