Looking for an under $500 USD digital camera.

[Robert Nicholson]

Well I use to own a Canon EOS D30 and sold it because it was under used 
and gathering dust.

So, I think I'd like something a lot more portable this time but I 
still have my old 1GIG Microdrive left over from the previous camera. 
So that leaves me with the a limited choice as I want to continue using 
the Microdrive is possible. I believe the Canon S30, S40, S45 all accept
Microdrives.

What other cameras would be suitable for a MacOS X user?