Overall, Vizio TVs are well-priced and have great picture quality. However, they don't have the high-end feel of some other brands, and their OS is laggy at times and not as full-featured as the competitors, as there are often a ton of bugs associated with their TVs that can even get worse over time. If you don't care about your TV's smart features, most Vizios offer good value.
2024 Lineup
Earlier this year, Vizio announced a new 86-inch model (V4K86C-0804) for their entry-level V-Series lineup. It retails for $999, making it one of the cheapest 80+ inch TVs on the market. It's not clear if or when Vizio will announce any other TVs for 2024. Most of their current lineup was announced and released in the second half of 2021, and they call it their 2022 lineup. Vizio doesn't seem very focused on their TV lineup; they stopped selling TVs in Canada entirely in 2020 and have released very few new models in the US since 2020. They released a handful of mid-range models in the US in 2022, like the Vizio M6 Series Quantum 2022 and the Vizio M Series Quantum X 2022, and two new models in 2023, the Vizio Quantum Pro QLED and the Vizio Quantum QLED.
Naming
Vizio's naming used to be straightforward, as they have very few models, but they have made some changes that can be a bit confusing. Their entry-level 4k TV is the V Series, while the D Series has 1080p or 720p options. Moving up, they have the mid-range M Series Quantum, P Series Quantum, and finally, the flagship P Series Quantum X. Often, it's unclear from the model name which year it's from unless specified, but the model codes used to make it a bit clearer. For example, the 2021 TVs use J in the model code, and those from 2020 have H (M65Q7-J01 is a 2021 TV, while the M65Q-H1 is a 2020 TV). The two new models released in 2023 don't follow this naming scheme anymore, as the Vizio Quantum QLED uses the expected 'L' naming, but the pro version Vizio Quantum QLED Pro doesn't.