Skip Talbot
EF5
I have not tested the firewire port on my 7 64 desktop (or when the box had Vista 64) as I don't have a firewire camcorder. I have, however, noticed a significant gain in stability in 7. I've overclocked this desktop's quad core from 2.4 GHz to 3.2 GHz, which is a significant overclock. The extra voltage required to run at this speed creates a lot of added heat and compromises the stability of the machine. I'd suffer an occasional lockup or BSOD in Vista, but it was worth it to me for the extra frames per second I'd pick up in the games I built the machine for. If I let the machine render AVCHD video for more than 6 hours, it would almost always lockup. I'd have to turn it back down to stock speeds to complete the render. In 7, however, I've only locked the machine up once since I've installed it, and its never locked up during an all night AVCHD rendering job. So 7 made a huge difference for me.
I usually recommend to other not to upgrade to a newer version of Windows unless the machine is like new, as hardware compatibility issues like David is describing are quite common. Plus many times people don't have the extra resources needed to run the newer version, so they'd take a performance hit upgrading. As far as I've seen, however, the jump to 7 from Vista has less snags with hardware than the jump from XP to Vista.
I usually recommend to other not to upgrade to a newer version of Windows unless the machine is like new, as hardware compatibility issues like David is describing are quite common. Plus many times people don't have the extra resources needed to run the newer version, so they'd take a performance hit upgrading. As far as I've seen, however, the jump to 7 from Vista has less snags with hardware than the jump from XP to Vista.