So I've begun to notice some minor uniformity issues on my 75Z9F during quick pans as well as findable (though it takes some looking) in static bright white or dim gray screens. On grays and whites it manifests as very slightly darker lines, both vertical and horizontal. (And for some reason, on bright white, if I really look, I can see a vertical as well as horizontal broad band that almost appears slightly more orange in tone). I think these issues are fairly minor, but it's one of those things that once you notice it, you (or I at least) tend to subconsciously look for it, so I'm going to have to work to train my brain to not worry about these things and just enjoy the display. It's only really noticeable on rare occasions in certain bright content (first noticed it during a quick upward sky pan on an episode of Voltron, but I do watch a lot of anime, etc.). I think I'm likely seeing a bit of the FALD grid as it's both horizontal and vertical and happens during panning either way on different areas of the screen. I'm surprised I didn't notice it up until a couple days ago, as I did a few quick tests shortly after getting the set and didn't see it (I did keep the tests brief so as not to focus on finding issues, however), so I hope it's not something that will progress. The display is still excellent overall, and I don't feel like it's bad enough (I've seen uniformity examples far, far worse) to warrant trying to exchange with Sony for what could be a worse panel. I thought I probably should mention it here, though.