I currently have two old Vizio TVs that are acting up and are due for replacement. My DTV system consists of a HR44-500 and 1 C41-500 mini. The HR44 is hooked up to a 50" Vizio that is more than 10 years old and is beginning to show it's age. Likewise the C41 runs a 8 year old 42" Vizio that has been losing it's HDMI inputs one at a time and is showing other problems as well. None of these problems are related to the DTV equipment and for the most part, I am happy with the way the system itself has been working over the past 5 or 6 years. My question is that I am looking at replacing the TVs (one at a time) and am a bit confused about the specifications of the latest models that are now selling. I am looking at a Samsung 58" (Model UN58NU710DFXZA) that is available from Costco for under $600 to replace the 50" Vizio. Would I have to update any of my current DTV equipment to meet any of the requirements of this TV. I am not really interested getting a better picture because I don't think my 80+ year old eyes would know the difference between HD and UHD. I am just looking to do a simple replacement of the TV with a similar (albeit slightly larger) TV. I'm sorry if this is a dumb question but I am somewhat technologically challenged and I do not want to purchase new equipment that is going give me problems. TIA for any advice or opinions.