I just want to mention for anyone, that built in pre-installed apps doesn't mean much, because (generally speaking) all tvs with apps have access to some kind of app store. So if there is something missing you can just download it and be up and running in not time.
hmm my 10yr old panasonic plasma never had burn-in... but I never kept it on a station with static image for hours at a time.
But yes, these days there are built-in measures for OLED to help mitigate this. So it is less likely to happen, unless you are on.. say a channel for static solid color banners for multi-hours a day, every day, for weeks at a time.
For peace of mind, LG has a free panel replacement while under manufacturer warranty, if in the event it happens. The LG C1 has a standard 1 year warranty, but the LG G1 has a 5 year factory warranty. Or you can buy 3rd party extended warranty - the only one I know of that specifically mentions burn-in is the geek squad extended warranty at BestBuy, but that will run $400-ish for 3 years.
I'd suggest reading the topic, because theres a lot of useful info/suggestions posted here already. But with that being said, I need more info what it will be used for, or what you put more value or importance on: (movies? sports? gaming?). It is also important to know what kind of lighting the room has (does the room have a lot of windows with natural light?). Earlier in the topic I mentioned a few models already, but before some of these other questions are answered it is hard to recommend anything, because there are variables to consider.
I'll say though that a 70 inch tv is kind of a not-so-popular size. More often you find 55, 65, 75/77 inch models.
Currently the 65 inch TCL is on sale for
$999 at Best Buy (great price) but the 75 inch is now at $2300 (bad price). the only other LED tv I'd suggest is the Qn90a
TCL is very close to the QN90a in many categories but I want to highlight a couple areas where it falls behind. Yet for several hundred less it is a fair tradeoff I believe.
This is a side-by-side comparison, of one of the major weakness vs the QN90a
https://www.rtings.com/tv/tools/com...51/27424?usage=1&threshold=0.10#comparison_17
viewing angles are not as good. Samsung has a special filter that combats the off-angle viewing better than the TCL. This could be a non-issue for you, if you watch the tv while the center and not off-axis - which is probably what most people do but could be not-so-great viewing experience if you have a large group of people trying to watch something.
Another tradeoff is the build quality of the TCL is behind compared to Samsung - but these are all things that may or may not matter to you. There is no one size fits all.
Ps for anyone interested, the LG C1 is about go on sale at costco - which will probably be matched by other stores