We purchased this 65” TV in mid-December, so have now used it for roughly 60 days, and couldn’t be happier. The colors (including blacks) are vibrant, the picture is extremely clear. This TV replaced a 55” LG OLED TV we purchased about 5 years ago. The picture quality is as good as the original, but the biggest improvements we noticed are in the software and the remote (smaller and better features). The interface with the sound bar (manufactured by a different company) is great, resulting in much improved surround sound.
[This review was collected as part of a promotion.] I bought the C3 55 inch OLED TV for my birthday in January and it is everything it's advertised to be and more!