After lot of inquiries, I tried BSNL Broadband, Airtel Broadband, Sify Broadband, Reliance Broadband. BSNL Broadband Service is not too good as somebody will says. Normal Speed. Service is too bad from BSNL Authorities.
I never suggest BSNL Broadband.
According to my Experience "Tata Indicom WIMAX". It is fully wireless Broadband Technology. It has Excellent speed depends the signal strength. It has Good Cusomer Support.
Airtel is Ok. Sify is also Ok.
I don’t know about Reliance. But I think it will be also good.
I have Full Signal strength in my area. So I can say confidently that is " Tata Indicom WIMAX can Compilation with BSNL, Airtel, Sify, Reliance & Others...