Bookmyshow.com is the best for booking tickets in advance without reach on the event hall.
Sometime you get late to reach at event hall and then when u reached there u cant buy the tickets due to housefull or any other major problem.
Also bookmyshow gives a lots of discount to their coustomer for booking tickets.
The UI of the site is bestest anyone can book a ticket even he or she is a new.
U can also see brief story of the movie so u choose a movie by the brief story. They also give discounts on snacks when u buy a movie ticket.
From my point of u bookmyshow is the best.so dont think more.just go for it