Unless you are going to use both IDE channels up with optical drives, I would get a PATA hard drives because then there isn't the potential for needing SATA drivers on a floppy disk during Windows install.
For maximal reading and writing from optical drive, I think you would want the drive(s) you would be using to be on a separate channel than your system hard drive. I have three optical drives spread out on the two IDE channels, so I benefited from using a SATA hard drive (in some way).
Even now, you may not saturate the ATA100 spec with current hard drives (unless in RAID I guess).
Other main argument for SATA drives is the thin cables, which is supposed to help promote air flow in the case.