I’ve been working with AV equipment for well over a decade now, and have the LG OLED 65E6P, which is a generation older, and a step up (still flat, although that generation had a curved model, but with an integrated sound bar)… Here’s my brief take on the previous comment, without any intent to offend:
Burn-In - Yes, OLED can experience burn-in. It’s a fact. It’s not super likely, even with gaming a few hours each day, or watching the news each night, but it does have the possibility to retain images. This is generally more likely and noticeable with large colour blocks, which will cause significant variance in uniformity in backgrounds. Usually it’s a detractor from naysayers more than an actual life issue. Out of the couple dozen panels I’ve serviced and calibrated, I’ve only seen one with this issue, and it was from repeating test and demo screens too much - not from normal usage.
Frame rate and motion handling - This panel is EXTREMELY fast, and therefore shows you just how slow 24 frames-per-second (normal Hollywood film speed since almost 100 years ago) truly goes. It will not exhibit motion blur like LCD/LED panels. And yes, it does generally do better with some minor smoothing applied (soap opera effect, if you will). This isn’t a fault of the TV, but rather a TV that is showing you just how weak certain standards are in a modern age where 60fps is the target for many games, or even sports broadcasting, where possible. Motion is actually one of the stronger suits for this particular generation and model, ranging at the 600+ lines of vertical resolution, which is par for a panel with a native 120Hz refresh.
Input lag + Adaptive Sync/Variable Refresh - This generation of LG’s OLED offerings fixed many things from my generation model, including lag. 21ms is excellent, and on par with almost all the best TVs. My generation was more in the 50-60ms lag time, which stinks. Anything under about 30 is usually fine, though <15.6 is the ideal. Essentially, if you’re concerned beyond that, you should be in the market for a PC gaming monitor, which, if equipped with G-Sync, could get you down to about 4-10ms in total lag. As to adaptive refresh, it’s a bleeding edge feature for TVs, only a few Xbox One X titles support it, and even fewer TV models have the hardware for it yet. ZERO TVs on the market support G-Sync yet, and again, only a couple kind of support FreeSync, and only for Xbox One X, and only for a few games. Not a thing for TVs yet.
All in all, this is a decent gaming TV, even for those who want to frag on Fortnite, or play slower paced games.
Compared models - TCL (not TLC) made a very decent Roku-based model this year in the 6 series. I was watching one of those just two days ago, looking at its picture performance as an audition for a client’s office space. It has full-array backlighting, which is the best way to get a decent real contrast situation for LCD panels, but the set is really hampered by a native 60Hz panel, which means REALLY slow motion handling. It has the bare minimum of 300 lines of resolution in motion, which is NOT GOOD. It will blur if you do not engage full soap opera effect, AND a black-frame-insertion option, which greatly increases motion clarity, but cuts light output, and worse - introduces strobing, which feels much like the juddery feeling from the battery-powered 3D glasses of old. The Samsung mentioned is a better choice for motion, colour, and clarity, but lacks the full-array dimming, so its contrast and HDR take a pretty savage hit, even compared to the cheap TCL. If you want Samsung’s equivalent feature-set, you need to be looking at their Q8 or higher series from this year to get full-array local dimming, and the better application of quantum dots for colour gamut coverage. And those models will run closer to $2K, unfortunately.
If I were to recommend a similarly priced alternative today, I’d look at this year’s Vizio P Series (models: 55P-Fx, 65P-Fx), which will sit near the $1K mark, have good local dimming, good colour, excellent motion, and generally give you excellent bang for the buck. Their only drawback would be that Vizio has the dumbest of the Smart TV brains, so plan on using a Roku, AppleTV, Amazon Fire TV, Chromecast, gaming console, or whatever else for your streaming.
Audio - As to the Atmos processing… Makes almost no difference with the basic TV speakers. Even the current sound bar from Vizio (SB361-xx - Someone else can correct this is they’d like, since I’m not usually a huge advocate for these) for ~$130 on Amazon will blow any of the basic TV speakers out of the water. And if you really want Atmos (or DTS:X) processing, you should be using a full AV Receiver rather than the TV speakers or a sound bar anyhow… That point really becomes moot for any audio track that features anything other than dialogue. Upgrade to a sound bar at least, or go big.
Conclusion - If you want a new TV, that Vizio is pretty great for the money. However, you want the best HDR experience, and can live with a refurb (I’d also likely recommend a SquareTrade warranty if you can), this was/is an excellent television. No LCD panel can currently match it for native pixel response, Or for general quickness. No LCD will EVER match it for perfect blacks (instead of somewhat muddied greys) due to the emissive-vs-transmissive nature of the display tech, even if newer LCDs can sear your eyes out by getting stupidly bright. But, most LCDs don’t cost as much, with very few exceptions from our silly friends at Samsung and Sony. This refurbished deal may get you a lemon, or a sweet, sweet deal, because when this TV is working well, there are few, other than its LG OLED siblings, that can match it!
Happy hunting, and good luck!