I am a user of Sify broad-band. Their feed back is excellent. They are ISO certified. If you have any problem with the connection, they solve the same at the earliest and they double check after 4 hours and 24 hours again to see if your problem has been satisfactorily resolved. Speed is excellent. NO ADVANCE PAYMENT FOR ONE FULL YEAR. YOU HAVE CHOICE OF RENEWING YOUR ACCOUNT ON MONTHLY BASIS. Also, best part is if you are going out of station for a month, you need not renew for that month. That can save you a lot. Great Service