It's good that I didn't watch RX100 first. Went into theatre with some expectations and spoiler alert: "Not Disappointed".(and that too even after knowing the suspense)
Since it is directed by Milan Luthria, I knew I am going to hear some good dialogues throughout.(take Once Upon A Time In Mumbaai for example)
I wasn't bore or felt like leaving at any stage.
Pritam did a good job at music. (especially that Arijit's humming during scenes) particularly, "Tumse Bhi Zyaada" standout the most (even still playing in my mind)
The only drawback that I see was Ahan's acting, don't get me wrong, It is not like he did a horrible job there, It is just his acting lacked "intensity" that the character needed. (but pretty good considering it is his debut), Tara Sutaria did good.
But the performaces that standout were their reel life fathers, esepcially with their dialogue delivery.
So overall, it's a good watch.