@strobe
Can you find some test results for this?
Out of interest I drove down to PC-World yesterday to
see quite what they had to offer in terms of PCI cards, USB peripherals and Firewire peripherals. Mainly because I needed to buy three network cards for my inbound A1XE.
The answer basically is PCI remains popular for the moment, USB2 phenominally popular at the moment and not one Firewire device was in sight ( apart from
a Mac that had firewire ports ). I asked the salesman ( not renowned for being the most clued up people on the planet ) and he happened to be a Mac enthusiast and he basically said if you are buying it for Firewire you are buying it for the wrong reasons because the Firewire support is notoriously unreliable ( data loss??? ), few useful devices support it and "its about as useless as Bluetooth at the moment, until the PC side of the business starts to support it commonly it is a wasted port".