I'll be moving up to a refurb Mac Pro soon and I still have a number of peripherals with Firewire 400 interface only. My original plan was to install a Firewire 800 to 400 PCIe card to use until I'm ready for 800 exclusively. However, recently I've been researching the possibility of using the 800 to 400 adapter instead, which would of course leave the PCI slot open for other usage. This seems to me like the best approach, but I'd like to get some input from the forum before I make that final decision. Cost isn't a factor, strictly logistics. Is there a preference for one approach over the other, as in performance etc? Thanks.