Voted for DD-Sid.
However, I have another favourite, which is Raj-Sid (I loved the father-son equation of earlier days, when the show first started).
Also, Nanima-Sid is a unique combination, I feel.
I also liked the brother-sister duos - Sid-Pratima (of initial days) and Sid-Kritika (of late).
Seems like, I love our favourite jamai's rishta with a lot of people.