First, let me start off by saying I'm no expert. That said, I would buy a Sony. Why? because I've purchased other brands and they never seem to last as long as either of my 2 Sony's. Talking to other people they seem to have similar problems with their non-Sony televisions. One of my Sony televisions is 26 years old and still has a good picture and great sound. We replaced that with a different brand about 10 years ago and have had continual problems with the volume randomly going up or down. We finally replaced that with a Sony flat screen television about 2 years ago and we are in love again. Great picture, excellent sound, and loads of new features.
Good luck with your search.