P. C.
A choice for graphics whores and people too dumb to just invest in a console. Or are like me and refuse to let 900 bucks be wasted not using my lappy.
how low you willing to go?
NES?
SNES?
Genesis?
THE BEST METHOD to run PSX games (and everything else for that matter) is via Retroarch - http://buildbot.libretro.com/nightly/
If you have any questions on how to set it up on Windows please feel free to ask, its very easy.