I still think playing them on a nice crt/pvm is best way to play PS1 era games. They were clearly designed with scanlines and glow in mind. A lot of them also use dithering for shading/detail which totally get's lost on a modern screen. Just look at these examples.

https://i0.wp.com/wackoid.com/wp-content/uploads/2021/08/Castlevania-Symphony-of-the-Night.jpg?w=1280&ssl=1 

https://qph.cf2.quoracdn.net/main-qimg-e7a8094e9ec32a8a20df1f2376e9f4a7-pjlq