You realise bad voice acting exists in Japan as well right? There's plenty of games and anime that sound horrendous even in the original language.
Never said otherwise now did I?
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.