I saw this product at my friend’s house. He using it for nearly 2.5 years. Overtime the interface has changed for the better with updates to the software. Still never experienced any stuttering of video streaming over WIFI for up to 4K resolution videos from Prime. The audio quality is also good yet. With the software update the picture and sound quality always improved. The biggest advantage that the ability install additional apps like Gaana, Spotify. Also we watch Youtube on it with smooth experience.The customer support for any related issue also good. They can response quickly and resolve it.It is an good product in 4000/- RS price range.Overall it is good to improve your TV experience.