Yes.  It's true.  I am a Vista dude no more.  I've replaced my desktop machine with a Mac Pro.  I purchased a new Mac Pro.  The specifications are as follows:

• Two 2.8Ghz Quad-Code Intel x64 Processors
• Two 500GB 7200RPM Hard Drives
• Apple Super Drive (DVD Burner)
• 23" Widescreen Cinema Display
• Airport Express PCI
• Nvidia GeForce 8800 GT 512MB
• OS X
• Office 2008 Pro
• VmWare Fusion

One of the most amazing things about this machine is how quiet it is.  I've never seen a machine with so much horsepower that makes virtually zero noise.  The Mac Pro has a a fan the size of a DVD on the back of it.  It spins very slow, but due to the size, moves a ton of air quietly.  The other thing I enjoy is the downright beautiful integration of all the components.  The monitor, keyboard, mouse, etc all talk to the desktop via USB and therefore the power button on the monitor for example, can be programmed to turn the machine off or just the monitor.  Or it can suspend, or anything else you want it to do.

Of course, I've talked plenty of times about the beauty of OSX and the pure brilliance of the GUI design.  Everything is exactly where you would expect it to be and operates the way you would expect.  Not too complicated and not over the top simplified.  There is an advanced button on almost every config option to give you the granual control you might or might not need.

Goodbye MicroSoft Windows...  I won't miss you, I am sad to say.  You were my hero back in the day.  One too many cherry doughnuts has done you in with bloat and slowness.