Hi Ron! When stepping up to the Q70T from the Q60T you gain the Quantum Processor 4K with AI upscaling. This provides a smooth, judder and blur free experience for fast moving objects, while also improving the detail and clarity in lower quality content using AI technology. When stepping up to the Q80T from the Q70T, you gain Direct Full Array, Ultra Viewing Angle with Anti Glare, and Object Tracking sound with Q Symphony. Direct Full Array and Ultra Viewing Angle with Anti Glare brings out brighter highlights and better shadow detail no matter what environment, bright or dark. The Object Tracking Sound uses audio positioning and scene analysis to give you a great sound experience aligned with the picture. ^Tim