Additionally, consider the lighting in your room. If you have a lot of windows, look for a TV with high "peak brightness" to combat glare. If you prefer watching movies in a dark, "man cave" environment, an LED or QLED panel with excellent contrast will serve you best. Final Thoughts
A 50-inch TV usually has small speakers pointing downwards or backwards. This creates "thin" sound.
For a 50-inch screen size, modern "HD" movies are best experienced on a 4K UHD (Ultra High Definition)