I've generally been pleased with Vizio. They aren't perfect, and rarely are they the "best", but value tends to be outstanding--and they do they make tradeoffs in areas where Samsung, Sony, etc., try to use to justify their under-performing overpriced TVs--style and form factor. I have no problem NOT paying for form factor (i.e. super thin, etc.). "Good enough" is the only criteria on form factor that I care about. Further, they're the only major manufacturer that continues to update their TV software in models as far back as 2016, TBOMK. Sony and LG... meh... one and done it seems for most model years, before they move on to only improving the current year's model. I imagine this may change with TCL Roku TVs. But that longer term support on software upgrades has impressed me enough to prefer Vizio to other brands--and since I'm ready for another upgrade, definitely pleased to see the 2020 options--particularly the 85" BEAST!
And while I can't disagree with some of the banding issues observed or the criticisms for the sub-par OS, let's not forget they've been using the same processor they had in their 2016 models--which were excellent for the price at the time, and, imo, the best 4k HDR value available (P-Series) back then. They obviously needed to improve the processor to keep up with the increasing demands of the OS and to maximize the panel capabilities. Hopefully, the updated processors in the 2020 models will solve some of the aforementioned issues.