A:Answer Hi mrzzzzz - All of the models you listed are in our 4K QLED lineup. When stepping up from the Q70T to the Q80T, you will gain features such as Quantum HDR 8X, Direct Full Array Backlight Technology, Object Tracking Sound for 3D immersive audio, and Ultra Viewing Angle plus Anti-Reflective Technology for more accurate colors and greater versatility in TV placement and seating without distracting glare. When going from the Q80T to the Q90T, you will gain features such as Quantum HDR 16X expanding the color spectrum and Direct Full Array 16X Backlight Technology allowing the TV to deliver rich, deep black levels and crisp bright whites. ^Val
