I've just ordered a ps1 because I'm none too fond of software emulation (I know that's just a weird quirk and 99% of games work fine on the ps2), but I wanted a real ps1 darn it. So now I'm wondering what to do about controllers.

If the ps2 controller would work that would make life simpler and I've heard from different sources you both can and can't so I'm coming here looking for a more definitive answer. Also does anybody know if this would cause some unforeseen issues becuase I know the poll rates are different (250hz on a ps1, 500hz on a ps2). Or would I be better off tracking down an original?