Need a budget. I can list a few but you can get 65" TVs anywhere from like 700-900 all the way through a five G's.
(FWIW, ANYTHING you buy these days at 65" is going to be "smart" and it's almost CERTAINLY going to be 4K - just FYI)
I would have figured that the link to a $650 TV and the note that 4K wasn't a requirement would have somewhat set the price range. I'm perfectly happy with my 10 year old LED illuminated DLP. The only drawback is that while it can, technically, be wall mounted, it really isn't practical. That, and I only have one of them.
I'm either going to go buy that Samsung, or just keep on waiting until I finish redoing the family room in the spring -- new sectional, new AV receiver, new speakers. Other than the stupid smart stuff, that linked Samsung is in the ballpark. I'm not cheap and not poor. I'll pay more for a quality product that meets my needs. I do want value. I'm not chasing the latest fad and very rarely am I an early adopter. At this point, for a current generation LED/LCD 4K TV, approximately $1k seems to be a reasonable price target, OLED being around $2.5k, and QLED (Samsung) being in between, around $1.7k-$2k.
I'd probably even pay a couple hundred dollars more for the same display without all the smart stuff. However, most of the current generation 65" LED TVs are around $1k, with smart stuff. You can get a Hisense in the $700 range if you get the prior generation. I am assuming that Samsung is about to rev, or replace, this particular family and thus chose it for deep discount on black Friday.
So I guess it really comes down to whether I can keep the Samsung bloat out of the way enough to keep the thing usable as a simple display.
The viewing areas are generally lit, unlike the theater, so the brighter blacks of and LCD are not a huge problem. The normal view positions are less than 45deg off center and the intent is to mount it on an articulated mount, at an angle to reduce the worst case a bit more, likely less than 30 deg.