Is the S a good emulation machine?
In regards to PS3 I misspoke, disregard what I said OP, I was thinking 360
Just get a decent PC and you can run RPCS3 fine. I'm doing it with my old ass RX 580 8GB and AMD 2700X. It's much better than having to put the games on a drive, fire up my modded PS3 slim, and not be able to do cool shyt like upscale.
As far as everything else, I have an X and it runs everything I've thrown at it up to upscaling PS2/ Wii U titles. I've seen Series S do the same with no issues, it just won't upscale as high.