I purchased a second-hand Dell Optiplex 380 for $55 on eBay, and it came with Windows Vista Home Basic SP2.
I had always heard that Vista was the worst version of Windows (well maybe Millenium Edition was worse), but so far in using it, I don't see what the issue is. It actually seems a lot like Windows 7, at least in its appearance and how you get things done with it. In fact, one thing I like better about it--the quick-launch toolbar icons can be very small, much like on XP. (What's with this trend of LARGE icons and listings, I like them small for screen real estate purposes.)
The only issue I've had--and I'm not sure it has anything to do with it being Vista--is that I couldn't get Acronis System Image Home 2010 to work properly on it for making a system image backup. I ended up using "Drive Snapshot" (for the first time) for doing that.
Otherwise, other than that Vista will soon be rather old, I don't see what's so horrible about it, frankly. I had considered upgrading the PC to Windows 7, but now I'm not seeing where I'd really need to, frankly, except maybe in a year or two for the same reason I've stopped using XP in most places--the lack of security updates and the like.
Thoughts?