Hi Salil,
quality of broadband services depend upon region to region.
But in general,
1) MTNL(good plans at affordable price)
2) Airtel if available (excellent support but fup sucks)
3) Reliance "wireline" (known to give best ping out the three)
based on price,
MTNL is cheapest, followed by reliance and airtel.
Also tell us your broadband requirements so that a plan can be suggested
You are welcome Salil.
I think Tikona is good only if they have the tower near your apartment in which you live.
Just ask them if it is near your area or not.