I have bought D-link dsl 2750, two years ago. Since then I have never faced any big issue with the modem. I am using a bsnl broadband connection. I will recommend you guys to go for this machine if you are looking for a modem.
I have faced few technical glitches with the router to be very frank. But the D-link support have fixed it in very less time. The response of the D-link support team was very quick and impressive.
One very important think guys. PLEASE DO NOT FORGET TO REGISTER YOUR D-LINK PRODUCTS ON THERE WEBSITE TO GET EXTRA 2YEARS WARRANTY.
Be a smart consumer. ;)