Which is better for a bright living room?

The LG. Its Mini LED backlight is built for higher brightness and deeper contrast than the onn's 520-nit LCD panel. The onn wins on size, not on bright-room punch.

Which has the better picture for movies?

The onn supports Dolby Vision and HDR10+, which the LG lacks. The LG counters with Mini LED contrast and FILMMAKER MODE. For disc and streaming HDR variety, the onn has the edge; for contrast, the LG does.

Which is better for gaming?

The LG. It lists AMD FreeSync Premium, ALLM and a Game Optimizer. The onn is a 60 Hz set with no VRR or ALLM listed.

Is the LG worth $349.99 when the onn is bigger?

Only if picture quality and gaming beat screen size for you. The LG was $279.99 on November 3, 2026, so its price moves; the onn's price was not given here.

Neither maker publishes a lifespan figure here. The onn has 6,571 ratings at 4.3 out of 5, which is a large sample; the LG listing carries no rating count.

Do both work with voice assistants?

Yes. The onn supports Google Assistant, Alexa and Apple Home. The LG supports Hey Google, Apple Home and AirPlay 2.

onn 65" 4K UHD VIZIO Smart TV vs LG QNED75B Mini LED 4K Smart TV

The onn 65" is the bigger, cheaper pick for most living rooms: 65 inches of 4K with Dolby Vision and HDR10+ for a price that undercuts the LG. The LG QNED75B is the better-built set with Mini LED brightness, the a7 AI processor and gaming features, but its listing is a 55-inch class set at $349.99 at BrandsMart USA as of November 7, 2026, and it has swung between $279.99 and $649.96 since October 30. Buy the onn if size and price lead; buy the LG if picture quality and gaming matter more than screen inches.

Ask our shopping agent

It checks today's price at every store, compares the alternatives and answers in about a minute.