I bought last year's R617 55 inch version for a secondary TV in my bedroom. I use it for Switch gaming and TATE mode games( mounted on a landscape to portrait Vivo stand. It can do both). For those who are interested in what that TV looks like for classic style Switch games in TATE mode please go to this link:
Pictures of TCL in action
I also throw my laptop on there for some retro pc gaming, retro emulation, and TATE games too. I have no major complaints about my purchase since it is being used as a secondary TV. This TCL has served me well for all my needs, and I can only imagine that this years model looks even better with all the other extra advertised features it has to offer.
I moved into a new place last year and was looking to upgrade my main TV too. For me, I'm a bang for the bucks kinda guy. So my main TV is last year's Samsung 65 inch Q70R.
I was looking for a TV with 1440p at 120HZ, along with Freesync, and that TV had the right price/performance ratio for me. I use my main computer on it with 3700X and a 5700XT. (I don't play PC games at a desk) Having said that, Freesync may be good as a whole, but either through the update process on the TV, or AMD's software side on PC, it just doesn't work on the Q70R without flashing or flickering.
So missing out on Freesync even on a TV that has it, isn't such a big deal for me, especially for the trade-off of being able to play 1440p at 120 hz. That's why I say if you're a budget gamer and want to try this new TCL out, I say go for it.
The 2020 6 series seems a lot like last years Q70R series minus the Freesync that doesn't work on Q70R anyway. Plus, it may actually look better than the Q70R and it already is better than last year's Series 6 TV's with all those added features. I will have to wait for multiple reviews before saying that definitively though.
Also, I want to throw this out there to budget gamers. Don't buy insurance on cheaper TV's like the TCL 6 series. I didn't and the TV turned out fine. If you buy it from Amazon, get it out of the box inspect it, and test and return it quickly if it's broken or you got a bad panel. Otherwise don't fear buying TCL.