I ended up going with a new laptop: https://forums.frontier.co.uk/threads/a-laptop-for-ed-in-2019.518813/I play on One X, PS4 pro and high spec PC. I use the same 50’ OLED 4K TV and can say that graphically the One X and PC are very similar but the PS4 pro doesn’t compare. I would definitely recommend a One X but as others have said it may be worth waiting for the next gen? PC has advantages but it also has the faff of windows and driver updates, along with maintaining add ins etc.
It was definitely more expensive, but I'm very happy with my decision: https://forums.frontier.co.uk/threads/this-game-is-freaking-amazing.521386/
It was a bit frustrating to get ED working and my controller customized (which I still haven't done to my satisfaction), but all-in-all it gives me more than just a graphics upgrade over my PS4. I still use my PS4 for some of my other games (Overwatch, RDR2, and Sony-exclusives), but I probably won't jump on PS5 until down the road when they release a cheaper Slim version. My wife is happy, too, as this frees up the PS4 so she can play NMS more.