I have been using Symphony winter cooler for the last two months and there is no complaint. I bought it online from https://ishop.goo2o.com which offered me lowest prices (Rs 7900) compared to any other online/offline shop. The cooling is very good.
Even I live at the top floor of the building which is heated up most in summer, even then it cools the rooms very effectively. It even works on inverter. Great value for money. May be iSHOP provided me best quality product!