This TV is beyond anything that I've ever seen! 1st off, it came in great condition and was handled with the utmost care. The delivery driver was very cool and he was very polite. Out of the box, the colors were so close to perfect, it was stunning to see how accurate the calibration was right out of the box. For those that say that this TV has blooming, is NOT TRUE at all. The blacks are so deep, that it is impossible for blooming on any settings you put it on. Not only that, I have the PS4 PRO and when I hooked it up to this TV, I could not believe how stunning and overwhelmed I was by the sheer amount of graphic fidelity and quantum colors it was able to output! This TV is a match made in heaven with the PS4 PRO! The sound is pretty good as well but get you a decent soundbar for maximum enjoyment from the set. For those who say that this TV is bad for GAMING is absolutely wrong! There is absolutely NO motion blur, NO artifacts, NO burn-in, NO lag and it runs fast games amazingly beautiful! I'm not sure if those ppl who said that this TV was bad for game consoles was not setting it up correctly or they modded their console and/or controllers but I cannot agree with their bad reviews. Just make sure that you do your homework on how to set this TV up to get the best experience out of this flagship tv! And as far as watching tv, my goodness, you will be blown away by how movies in any resolution, especially 4K and/or in HDR is something to behold. Once you experience this Vizio m series quantum TV, it will blow all of your other TV's away, including most OLED's. YES!....EVEN OLED's! Hopefully, you become one of the lucky owners of this Vizio TV from Amazon...you will be 1,000% satisfied! Hope this sheds some light on what your searching for in a great TV! Feel free to ask me any questions that I may have forgotten to touch on. Be safe out there!

Update: The discoloration in the screen has resolved itself over the course of a few weeks. Vizio (great customer service) was willing to have to TV replaced under warranty but we decided not to do that at this point. Could have been some rough handling during shipment.

Original post:

Love the TV itself, but there was either a manufacturing defect or damage in transit that limits me from giving this a 4-star review.

Cons:
1) defective screen - I installed the tv during the day, everything seemed fine. At night, during scenes with real deep blacks I noticed a blue dot and line on the screen. Not a dead pixel, but something else. It's small but noticeable, and enough for me to be pissed since the thing is brand new. It's not my first rodeo, and the install went perfectly. It's either got to be a manufacturing defect or mishandling during shipment. Either way, the box is gone and now I'm stuck with a defective picture. Do yourself a favor and buy big box items at a store that you can easily return to.

2) Refresh rate is not true 120, it's 60 and it shows. Check any tech website and you'll see the "effective" rates are a manufacturer's trick.

Pros:

1) decent picture for the money (minus the blue dot and line!!). The brights are bright on this one!

2) nice operating system with some access to free content. System settings are very easy to navigate.

3) 2019's subtle physical redesigns are a bit better than the older models.

EDIT: Vizio is going to come out and swap the TV with a new unit under manufacturer's warranty since the TV is a day old.

Pros:
Great picture! If you're sitting directly in front of the tv, the picture is great.

HomeKit/airplay capable. I now connect music directly to the tv and play it through sound bar via my iphone. Previously, I had to connect iphone to the soundbar. It was a little more tedious to do.

Homekit/Siri capable to tell the tv what to play.

Has all of our favorite apps, except one.

Bright colors. Cartoons/animations pop!

Cons:
Antenna TV is pretty limited menu wise. It doesn't tell you what is playing.

Software is slow, but it's not a high end tv either.

Which goes back to the one app it's missing. Sling tv. We use roku that has a faster processor to watch sling, however, I do wish this tv could add more apps.

600 nits. In dark scenes, it does feel too dark. This is more evident when watching tv during the day. Increasing brightness just makes everything look washed out.

I'm being pretty nitpicky here. I think the TV is great for the price. If you want a perfect TV, it will cost more than $1000. I knew this tv had poorer viewing angles, but had darker blacks than IPS panels in this price range. Would I buy it again? Absolutely. Ratings.com has a great review of this tv, and the compromises this tv made fit with my style and budget.

The picture quality is great though I've seen better HDR on some units. The upgrade of lower res streaming (720/1080p) is exceptional, far exceeding the original picture shown on a good 1080p TV set. The sound is acceptable in that it is comparable to other sets this size but is still nothing to write home about. A sound bar is definitely a requirement for good sound unfortunately the old Vizio sound bar that I have is not very compatible. In two hours of testing, adjusting and sampling, I was not able to get the volume control to consistently work on all modes of input. (Worked on std cable setting but not on Smartcast or apps). Initial setup was a mixed bag. The set automatically checks for updated firmware... and loads and rechecks and loads more and rechecks and loads more. All the firmware upgrades took over 30 min for my setup. Frustrating wait. The Smartcast feature is great, bringing dozens of free TV channels into play to the point that I may pull the plug on a couple of streaming services. One of the biggest frustrations of a 4K UHD HDR TV is that vert few streams are actually done in 4K resolution. Most have to be upscaled from the 720 or 1080 original stream so the set's ability to upscale is actually more important than the ability to render a 4K image. (Don't forget that your internet speed can be greatly compromised by 4K streams.) My biggest con after the original long startup procedure, has to be the overly complicated remote operation. Vizio's remote has long taken criticism for it's operation and things have not improved much. In reality, it is the TV programing more so than the workings of the remote itself. The menus are initially just too complicated. Once you've had a few days to learn the way to use it, it works OK but requires too much "learning" to get a high mark from me. In summary, it is a great set, exceeding my expectations but it is frustrating that Vizio's biggest complaints go back years and do not seem to be fixed yet. Incidentally, Alexa works well with the setup for On/Off, volume and channel change and all my old Vizio remotes still work with this newest model.

So far, I like this tv. It has issues though. Some strange combo of using Chromecast and turned it off causes it to require being unplugged to get back to the home. It's happened 2-3 times in the month or I've had it.
Sometimes getting back to home is just tricky or lucky.
The home screen is MESSY with too much stuff. I wish we could customize some parts out of it.
Vizio watchfree is cool, but we don't use it. We cut cable long ago and it feels like having cable again, which might be a huge plus for some.
When connected to a sound bar and using apps (mostly casting) to change volume, it makes huge jumps or inconsistent changes.
The app could use traditional arrows as an optional interface.
It would also be nice to have it work with both wired and the wireless networks concurrently, but that's not even common with a PC.
I'll give it more time. If the issue with requiring unplugging continues, it'll be a warranty issue.

The picture looks pretty good out of the box-setup, but I'll eventually tweek it. For a matte screen, it does reflect a lot more lamps/light that I expected.