Which Audio Interface For Cubase Sx, Need one with excellent OS X drivers Options

I just bought Cubase SX for Mac OS X. Haven't even received it yet, so my perceptions aren't colored.

SO my question is: how am I gonna get sound into my Mac? I don't need anything as powerful or expensive as the MOTU 828.

Something like the Edirol UA-5 would be perfect - if it works. I've been reading horror stories about incompatibility with Cubase SX (with the old beta drivers for Edirol). I gather the M-Audio DUO is even worse. And I'd use the mBox but . . . no OSX drivers.

So: recommendations. Should I get a PCI card? Is USB gonna work since I'm starting fresh?

Thanks a million.

Jeff

Bubbachao, I paid US$349 for Cubase SX at floridamusicco.com.

Rickenbacker, I'm now messing about with SX and the Edirol UA-5 on OS X. I can get everthing working fine when the UA-5 is set to 48 kHz, but I cannot monitor and record simultaneously when the UA-5 is set to record at 96 kHz. Is there a way around this? Setting the SX to output sound to the onboard sound hardware while recording from the UA-5, for instance? Or am I stuck with 48 kHz?