I was rather nervous about joining one of the Big ISP Companies, as they seem to get generally poor service, however just over a year ago I joined Tikona and I till date experiencing good service from them. My first ISP was MTNL who were absolutely terrible but being at the time new to the internet I thought the problems I was getting were normal and stupidly stayed with them for 2 years.
After this I changed to Tikona as it was recommended by friend. Initial 2 months was good, but after that speed was dropping continuously, finally after 3 visits from their Technician issue got resolved. I have absolutely no problems since that.