Well, I started at the 5090 and mostly just because that's a beast (regardless of if the uplift is as good as we'd have liked, it's still the best).
But once that was out the 5080 seemed like the next best thing. Sure a little disappointing it wasn't closer to the 5090 and was still behind the 4090 but other than that, except for a few outliers, nothing was as good. It was half the price of the 5090 too, so while still expensive it was better value. When it comes to the 5070Ti and 9070 XT I appreciate it's pretty close but I feel Nvidia and Nvidia technologies are just slightly better supported. I don't use upscaling much if at all currently but if I did, while FSR4 seems to have closed the gap in quality the fact people have to use Optiscaler to get FSR support in games that use DLSS shows that currently there's better DLSS support. RT also seems to be better especially with things that use RTX implementation. Plus any apps that use GPU acceleration seem to be more compatible with Nvidia tech. In the past, from what I recall, I've had less issues with my Nvidia cards than my AMD ones, so that also leads me to favour Nvidia a bit.
the fact you've mentioned FSR4 I take it you have a 9070 or 9070 XT? Any buyer's remorse?
This, this mindset is why Nvidia fleece you.