In the beginning of Summer season this year I bought the Symphont Window 51 Air cooler, I got it for Rs 6500 from Vijay Sales and the deal was fair taking into consideration that its prices go up in summer season.
Its got a capacity of 50 litres. This window cooler has got the look of Air Conditioner and gives you similar kind of cooling and is very effective.The cooler is very light in weight and easy to install and move from one place to other.
This cooler is suitable for a medium sized room and gives you instant cooling with less energy consumption. Its quality is good and the material quality is also very good.It produces very little sound. I hope it lasts for atleast 5 years and my experience this summer with this cooler has been quite good.
Only drawback is it does not come with a company trolley, I found a trolley for it in local market, but without trolley it is a bit of a task to move it around.