Best TVs: Our top picks, plus plain-language explanations of the most important specs and features

LG says OLED TVs will comprise 20 percent of the company's high-end TV portfolio in 2019, with the world's first 8K OLED (model 88Z9) and the 65-inch roll-up 4K OLED (model 65R9) joining its W-, E-, and C-series 4K models. There are 14 new models in the company's LED-backlit LCD series--the Nanocell line--in screen sizes ranging from 49 to 86 inches. New LG TVs will get a mid-year upgrade that will add Amazon Alexa support to the existing support for Google Assistant. Samsung doesn't have an answer to LG's eye-popping roll-up OLED, but it will offer 8K QLED TVs--the Q900 series--in screen sizes ranging from 65 inches to an eye-popping 98 inches. The company's 4K quantum-dot TVs (the Q60, Q70, Q80, and Q90 series) are available in screen sizes ranging from 43 to 82 inches.