I now have 5 TCLs -- one in each bedroom and one in the kitchen -- and couldn't be happier. Built in Roku is fantastic. And you can't beat the price. Paid $299 for a 50" TCL Class 5 4K UHD in 2018 which is still stupid cheap by today's prices. FYI, here's a handy guide to what to buy based on TV size and viewing distance.I've purchased a couple of TCL Roku TV's and they are great - pretty much every app you can imagine to download. They even have the Comcast app that you can watch your Comcast account (recordings and all) on them without a box. It makes it an easy choice for me when getting a new tv for a room.
I agree with one exception. TVs with Roku built in are good. Same Roku interface and options.I have bad luck with limited experience using smart TVs. Find the streaming devices, Roku, Apple TV, etc are far superior to the native streaming options on a smart TV.