Reviewers in general didn’t point out enough (or at all) that the original Steam Deck in terms of performance is for 99% identical (about 3-6 fps increase). It is not obsolete and like the OLED version, the LCD version will still enjoy years of great software support which makes the Steam Deck so awesome to use in the first place.
If the screen never bothered you or the battery life then I see no reason to upgrade for that kind of money, personally the saturation slider fixed the color issue I had and I never had a session where I used the device from full to empty in 1 session.
STALKER Clear Sky (SoC and CoP are also good)
Plays wonderful with the community control layout, some additional mods really make the game shine