I have a fairly similar setup to yours (Plextor 40X and Plextor 4x12 CD-R). I originally used a Fireport 20, but I found that I had trouble booting off of CDs with it (it worked great for everything else, though). I replaced the Fireport with an Adaptec 2930 and I haven't had any problems since. Any Ultra 160 card (including the 19160) would be massive overkill for just CD-ROM drives.