Hi there, If you're asking about the difference between the Q60T and TU8300, there are many. I'll make a list of Q60T benefits to keep things easy.
• Better processing with the Quantum Processor 4K Lite
• Dual LED (better skin tones)
• 100% Color Volume
• Adaptive Picture (helps you see better in very bright or dark rooms)
While there are others, those are the biggest ones. If you are set on a curved model however, go with the TU8300. Cheers! ^Scott