When I buy a TV then I remember the following points which help me to buy a perfect.
Firstly, remember that you must buy a bigger size(32 inch) of LED TV which view a great picture quality and can adjustable lighting and effects.
Second, LED TV must supports 60 hz standard refresh rate must supports, and USB connectivity because now a days the technology change very fastly so this concept is applicable for all conditions.
7+ 7 w speaker output must given in LED TV because it help to convert a pure quality of music.
So my experience with my personal opinion that must remember this points because I use this and I seen positive results.