I have visited INOX: Quest Mall once, and I would not recommend it to anyone.
I am not saying that the theatre has bad picture and sound quality. That is not the case at all. The tickets are simply too expensive! Even after two weeks of the movies running time, ticket prices rarely go below Rs. 220, when all the remaining theatres nearby have already lowered the prices to around Rs. 100. So, if I have an option to visit other theatres with similar picture and sound qualities, and that too at such lower prices, why would I chose against this one?
I would not recommend INOX: Quest Mall. Try other theatres in Kolkata. They will surely have a better deal.