I bought my Vizio M55-E0 (2017) model on clearance for $600 from Costco. Add on an extra 3-year warranty (total of
5 years) for $60, and I'm set until 8K TVs become a reality.
The Vizio M series is a great sweet spot, it has HDR, 4K, local dimming (enhances bright/dark contrasty scenes) and now has a normal remote not the weird tablet one. The built-in Chromecast is also great for streaming stuff from online sources. The P Series is better picture quality if you are OK with the slight extra cost.
Vizio P55-F1 (2018 model) at Costco for 1049/999. Hard to beat this unless you go OLED, and that's going to be double the price.