The thread asks a good question so lets keep it clean. I've removed the replies as this was going way off topic. I's a community forum so any advice/feedback you have about the subject would be better posted here than via PM.
The PS4 Pro certainly adds more crispness over the original PS4 which can be notice in-game, but at the same time, you'll still see quite a lot downsampling due to the checkerbox effect that dynamic 4k introduces during complex game scenes (certainly noticeable whilst playing AC: Odyssey). But at the right price, it's certainly worth the extra money.
However, if you are after the best 4K experience you can get from the current generation consoles (and not bothered about being stuck to the playstation), then the Xbox One X might be the better path to take.