I have been curious to see if Firewire 800 is going to be alot faster than Firewire 400.... I took an 8.9 Gig video file and transferred the file to each type of drive. I used a digital stopwatch (so I am sure I am within plus or minus 1 or 2 seconds) to time how long each took to complete the transfer.
The results:
The FW800 Drive: 4 minutes 19 seconds
The FW400 Drive: 6 minutes 03 seconds
You would have to decide for yourself! Not bad ..and the drives are not that much more...just purchased a 200 Gig FW800 drive for $315 and the PCI adapter card was $68 for a 3 port. The drive came with several cables including a FW800 to FW400 cable for other drives to connect to the new PCI adapter.