Which is better for a bright living room?

The Insignia F70. Its mini-LED backlight can push brighter highlights and hold contrast better than the standard LED lighting on the LG NU85. The LG wins on size, not brightness.

Is the 75-inch LG worth $100 more than the 55-inch Insignia?

If you sit more than 8 feet away, yes. You get 20 more inches of picture for $449.99 versus $349.99 at Best Buy as of November 4, 2026. If your room only fits 55 inches, the extra size is wasted.

Which has better picture quality?

The Insignia F70 has the better panel technology: mini-LED with QLED color beats the LG's standard LED backlight on contrast and color volume. The LG's advantage is screen area.

Which is better for gaming?

Neither is a gaming TV. Both are 60 Hz, so you get no 120 Hz support for consoles. The LG has three HDMI ports, which helps if you connect a console, soundbar and streamer.

Do both support voice assistants?

Yes, but differently. The LG lists Google Assistant, Alexa and Siri support. The Insignia runs Fire TV, so Alexa is built in and other assistants are not native.

Neither maker publishes a lifespan figure, and both use LED backlights rated for tens of thousands of hours. The Insignia has only 75 ratings versus 956 for the LG, so the LG's 4.5 score rests on more owner data.

LG Nano NU85 4K UHD AI Smart TV vs Insignia 55" Class F70 Series 4K UHD QLED Mini-LED Smart TV with Fire TV

Buy the LG Nano NU85 if you want the biggest screen for the money: 75 inches for $449.99 at Best Buy as of November 4, 2026. Buy the Insignia F70 if 55 inches fits your room and you want mini-LED backlighting and Fire TV built in for $349.99 at Best Buy. The LG gives you 20 more inches and three HDMI ports for about $100 more; the Insignia gives you better contrast technology and a smaller footprint.

Today the Insignia 55" Class F70 Series 4K UHD QLED Mini-LED Smart TV with Fire TV costs $100.00 less at its best price.

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