CD-RW/DVD-rom upgrades


Hi everyone. I recently acquired a Power Mac G4 AGP (sawtooth) 500mhz. I want to do a few upgrades. First, I want to install a CD-RW/DVD-rom drive or even a DVD-RW (+ or -) would be fine.

Currently, I'm running OS 9.2.2 with 512 mb of ram. I will want to upgrade to OS X (probably tiger) but will need the DVD portion of the drive in order to do so.

So my question is which drives would you recommend and which ones to stay away from? Thanks for any help.