Does anyone know of a decent PSX emulator for OS X? I've tried a couple, but they weren't really that great..

Try here http://mac-psx.hansr.net/

Not sure how they run on hackintosh's but were good on my ibook.

What ones have you tried, emulation on macs is similar to gaming, a little thin on the ground.

There aren't any good PS1 emulators out there.
Most of them crash upon start.

Maybe you could try a good PSX emu for windows through darwine.

This is a good source for Macintosh emulation in general. Almost everything is PPC atm. As far as good PSX emus for the Mac, Connectix Virtual Game Station used to be the best PSX emu for any platform, but it only works in OS 9 native. Runs great on my iMac 333 but still no match for ePSXe.