For my latest project I need one of these. It doesn't have to be a massive capacity -- 20 GB would be enough but more is fine if it doesn't come at a high cost. Anyone have recommendations on external Firewire drives that are known to be bootable by PPC Macs, particularly under Tiger and Leopard? (Bonus points if it boots under OS 9 but that's not a requirement.) I know some drives can be flaky about being bootable by a PPC Mac and I'd like to avoid a purchasing mistake.