Sony Bravia KDL 40EX520 is not good as its other variants that are present in the market now the video quality of the product is not good as it were advertise.
Comparing it with other brand like LG and Onida this time Sony Bravia lags picture quality as well sometimes it sounds are even not good. On the other hand the smart TV features of Panasonic and of Samsung are not present in this television of Sony Bravia which are seizing the market right now
Other variant of Sony Bravia that has the feature of Smart TV are very expensive and not for common person hence sony has to reduce its price of tv so that it will be available for every person. That is what I think.
I gave this variant of Sony Bravia not more than two star.