The thing these discussions invariably miss for awhile until someone points it out — I see this on art cinema forums all the time — is that all of the resolutio

The thing these discussions invariably miss for awhile until someone points it out — I see this on art cinema forums all the time — is that all of the resolutions are functionally bottlenecked by things having nothing to do with the disc. The size of the screen, for instance, how far you're sitting from it, your actual visual acuity, and so forth and so on. Because these things tend to be suboptimal more than they are optimal, the benefits of higher resolution have diminishing returns, because you have to increasingly have everything "just right" for it to matter. There's been studies showing that in actual typical viewing conditions for most actual people, higher resolution formats are overkill. My preference is for blu-ray for instance but we have a small screen by today's standards, which we really don't have any desire to replace in size.