I had to take a mtnl connection and they were asking for rent of wifi modem so I decided to purchase a new wifi modem itself.
I opted for Dlink wifi modem because of its brand name among customers. I bought it for 1550 from janakpuri and installed it, installation and setup was very easy, anyone can install it. dlink wifi modem is working very good it gives the signal in my whole apartment it is of 100 yards even outside.
Connects with phone and laptop instantly there are no heating issues in modem. Overall experience with dlink is quite good I will recommend it. But it is a little bit of expensive as compared with other brands like tenda etc. but there is no such difference.