Why I am getting the same picture and sound quality even after purchasing the latest Digital TV?
You should also consider the source of TV signal. No matter how much money you spend on a TV, the picture will only be as good as the source video signal it receives. For instance, a DVD will look better on a low-end television than an analog broadcast antenna signal will look on a high-end HDTV. That is because the quality of the digital signal sent to the analog set is far superior to the analog signal sent to the digital HDTV.