So far the Nafratbaazi is what I enjoy because it is well established. From the first scene of Om and Svetlana (In IB) Om's contempt for her was established and their hate chemistry was superb.
Now the hate chemistry actually has a real platform on DBO. They are pseudo-engaged and they are technically a couple. So it gives them yet another dynamic. I really enjoy watching them. I won't pretend otherwise.
As for Gauri-Om, whatever scenes they had especially the one's in KT's house and the train/ jungle I liked. Gauri was not bowing down to him at that point, I enjoyed that. Now as ChulBul they have a friendship and a camaraderie which is cute. So I will have to wait and see when Om and Gauri meet again, how much I like their interactions.
For now, I am a fan of the Nafratbaazi!