I suggest Airtel and Bsnl .Bsnl home 500 is a good plan speed upto 2mbps (2.5 GB limit and night unlimited after 2:00 AM to 8:00 AM)
I had applied for the new BSNL connection 2 months back but bloody no proper response and finally they gave me some crap reason that there was no underground line in my area.
I now have Airtel 256kbps unlimited for Rs.750. new plan awesome speed some times after 8:00 pm touches 512 kbps.
I have Sify Broadband at my home and services are satisfactory. But watch out for monsoons! services get disrupted many a times.
That maybe because of Mumbai rains.. but may not be a problem in other cities!!