I had Amazon for a short period and thought they looked better than Netflix which I find to be very good, it’s weird that we are all finding this different, perhaps these providers take into account our internet connection at the times we view so at peak times maybe we see a worse image and at off peak a better one, that’s just a guess.Sorry Oliver I disagree as I think Amazon has the worst quality while iTunes has the best.
On my LG 65” OLED my iTunes film look and sound great in 4K Dolby Vision as do my Vudu films in UHD.
Race please check in after you watch Roman Holiday and let us know what you think.
Certainly that site seems knowledgable to me and the caps back him up but also remember the DVD is likely sharpened a little.