This weekend I will be buying a 50" TV, but I not sure if I should buy a 1080p set or 4k set. I will be upgrading from my 5 year old 46" Panasonic Plasma TV. The new tv will be for a bedroom. I currently have a Sony PS4, Sony BDP-S6200, and a 5 year old Pioneer AV receiver. Please recommend the best 50" tv's for around $1500?