We needed to replace our LG 50 inch before Xmas. We ended up with the Insignia 4K 55 inch Roku. We considered the TCL brand which ran about $20 more at the time, but there wasn't one on display at BestBuy. We are pretty happy with the Insignia. Have it hooked up to the ol' LG sound bar via HDMI. Insignia is a BB brand. From my research, they also made some of the Sharp models before Sharp sold them exclusive rights to sell TV's under the Sharp brand in the US.
Our LG lasted only ~3 years before the LED backlights started going bad. I repaired it once but the 2nd time, I decided not to throw good money into it. After having a >$3,000TV some years back, I vowed never to buy the latest and greatest. If I have to throw this one out in 4 years, I'm a happy camper.
Good luck with the TCL. The Roku TV works a lot better that the embedded LG smart interface ever did.
P.S the Roku Android App controls our Insignia Roku. I imagine it does for the TCL too.