Practically any new 4K TV you buy will be a smart TV, which means it features built-in support for accessing popular apps and streaming services. However, different companies use different smart TV interfaces, and some people may prefer one platform over the other.  Here's a rundown of different smart TV interfaces with details on which TV manufacturers use them: Tizen: Samsung webOS: LG SmartCast: Vizio Google TV: Sony, TCL, Hisense Roku TV: Roku, TCL, Hisense Fire TV: Amazon, Toshiba, Insignia, Pioneer, Hisense Though a few services may be missing here and there, all of the major streaming players are supported across every platform. Navigation style, personalization options, and extra features differ across each system, however. We prefer Roku's interface for being the simplest, most user-friendly, and reliable of the bunch, but its visual style is a bit outdated compared to other operating systems that present a more content-focused approach. Ultimately, every system has its own pros and cons, and they all get the job done.  But if you are unhappy with your TV's built-in interface, you can always purchase a separate streaming device with the interface you prefer. Roku and Fire TV options are often on sale for as low as $20.