The post seems to have gotten plenty of attention anyway (617 diggs at the moment), but here's a better link-bait title: Last night I upgraded from Vista to Windows XP.

After covering performance, device support, reliability, gaming and multimedia, the conclusion is obvious:

Microsoft has really outdone themselves in delivering a brand new operating system that really excels in all the areas where Vista was sub-optimal. From my testing, discussions with friends and colleagues, and a review of the material out there on the web there seems to be no doubt whatsoever that that upgrade to XP is well worth the money. Microsoft can really pat themselves on the back for a job well done, delivering an operating system which is much faster and far more reliable than its predecessor. Anyone who thinks there are problems in the Microsoft Windows team need only point to this fantastic release and scoff loudly.

Well done Microsoft!