I bought voltas 123LY 1 Ton 3 Star Before five year.till now I am using this without faced a single problem.It is totally sound free my room is slightly higher size ad required by ac capacity though it is capable to cool a little bit longer time as other.ad we know that TATA is a very famous and old brand so it has a brand value also.their customer service is very caring they take a simple problem as priority basis and resolvef as short time.also ac price is lower than othet brand so it is value for money.