Since the connection is via sluggish fireware (don't on Windows!) or USB 2.0 the spindle speed isn't as big a deal from say 5400 to 7200 RPM. I have both and can't tell much difference.

The firewire connection is great for Macs and Linux but if you follow the forums, data loss on Windows via firewire is all too common a complaint. Please stick with USB 2.0 for Windows. It's too early to tell if Vista improved this area.

Why is that unit so pricey? I see cheaper at newegg.com and geeks.com. There's a 500GB for 180 and many others. Your price seems out of line. Maybe it's some "rugged" thing but I have this Metal Gear case that has traveled well which I popped some 300GB 5400 drive into and it totaled out at under 150.

Bob