I'm looking at getting a *large* drive for my Q630, to make my new development machine (currently using a IIsi, 2GB SCSI)...  and, of course, this happens to be an ATA based machine.

Staying away from ATA/100 drives, I found a Seagate Barracuda ATA/66 drive in the $125 range (damn, drives have gotten cheap!) which is 30GB.  What problems, other than the installer maybe glitching on large partitions, can I expect with this?  I'd presume from the age of the machine that the PROM code can't handle LBA mode, but could probably boot off of a small Mac/OS partition at the beginning of the drive...  

Suggestions?  Thoughts?  Comments?