Nice system!
Looks like a pretty impressive system. Curious, what are the 3 little windows on the right center of the unit for? They almost look like thumb wheel digits.
As for the Vista experience, it's biggest issue is support for older equipment from my point of view. Being the computer support guy for a lot of people, I get a lot of calls about a printer or scanner that won't work with a persons new computer, and a lot of whining when I tell them it never will. Plus, there is a lot of good software that never will be ported to Vista, which means there are a lot of hidden costs involved with Vista. I have a number of office computers running very solidly and happily on Windows 2000.
I've built systems for almost 2 decades now and I will not install Vista for anyone.