If you have Airtel, it would be great. I have Hathway and my roomie has Tata. I find both equally good in terms of speed and reliability however tata is bit expensive.
an once that happens then..... it might take 3-9 months for repair.... horrible exp at Baner..... Jai BSNL dude... i am talking about phone lines... which normal people use everyday....forget broadband.... hope you never face their customer service