How frustrating. I just wrote a giant post, and before hitting submit, I had, for some reason decided to unblock popups for AVS, and in doing so, I cleared my reply.
I'm going to paraphrase for the sake of my mental health.
I've seen very little talk about the 480i/480p settings. As I see it, there is no real advantage to using the 480p setting. It's more of an annoyance, as it does not preserve the original aspect ratio, and when I use the set's aspect control, I lose a small amount of real estate vs the box's "cropping". Also, it's just annoying to have to change AR's when viewing 16:9 content. I found it hard to get a true A/B test.. But from what I could see, I saw no increase in PQ, only a nominal change in color levels. The biggest thing I do not understand where the logic of "480p=stretch to 16:9" comes in. I'd most likely be using the progressive setting, even if just for placebo effect.
There.. I think that's everything I wanted to say.
signature quotes are dumb