No real complaints other than poor audio and power from the speakers. Also, I could not register this TV online at Vizio Product Registration because the models listed are 2017 models. Pretty poor for a major TV company.
I purchased this Vizio tv set to mainly watch sports and use my xbox one x for 4k gaming. Vizio has raised the bar and taken a leap forward in picture quality with features available HDR10, Dolby Vision. If you're on edge and dont know which tv maker to choose, go to local best buy and compare and contrast with a visual. Always better then a spec sheet. If you cannot see it in person, read reviews and jot down any pros and cons. A friend recommended this TV set to me; I would do the same for a friend. Thank you and cheers to Vizio for making TV interesting again.
We had a difficult time finding a 4k TV with a combination of a great image, wide viewing angle, and competitive price. The Quantum series has been a joy and we're glad to discover it at the store.