To mess with your shoppers brain, a Samsung Smart TV has options an LG Smart TV doesn't have, that either RCA or some other brand has and vice versa.
The following is from personal experiences dealing with Samsung and LG TV and Smart TVs and respective customer services.
Samsung customer service.... is probably the worst I have ever encountered. useless scrip people on a phone
LG seemed on the ball answer my questions quickly.
If you have converted Movies DVD into MP4 and use subtitles. Samsung handles poorly the SRT files. LG on the other hand.. never failed handling them.
How do I know I have Samsung and LG TV, and Samsung is constantly patch the Smart HUB to fix it. and often it take then 2 weeks to fix it.
yes this is important for me, because of my hard-of-hearing quadriplegic on a life sustaining ventilator daughter needs CC to properly understand a tv/movie, my other alternative
is to blast the sound bar over her bed to levels that set my teeth on edge.
Samsung TVs seemingly have issues ( got 2 and both do it) with 5GHZ signals, they work fine on 2.4GHZ wireless, the only solution I found was to hard wire them both
My LG TV run on 5GHZ flawlessly (and yes all three are about the same distance from the R7800 router I have.)
Also know that Samsung has been removing apps after a few years a TV exists, I have a 3 years old Samsung TV that doesn't have a HULU app anymore (no longer supported by the OS version running on it, and no updates for it to be issued) as the other TV which is 1 year old, still has it. Samsung seem to be supporting their TV pretty much the same way they support their phones, after 3 years you will be best to get yourself a new on... LG has not failed to update and keep everything I watch current and functional on it.
Now that all said... you can by a NON Smart TV and get for 100$ either of those Android or Web OS, or MS OS for TV (USB device that plugs in.)
and the TV's are also.... cheaper...
Food for though when buying.