Earlier quoted context omitted.
"doing a clean Windows install is difficult if the only means of reinstallation you have is the bundled "recovery DVD" which puts all of the shit right back on there." That's not a clean install. A clean install is buying a retail version of Windows and blasting it down on your HD. Recovery DVDs recover what the hardware vendor put there in the first place.
So you have to buy Windows twice?
Or you can buy a computer that doesn't come with Windows in the first place.