I have a better idea: I run the best OS on the best PC: read Windows 7 on a MacMini core i7 with Radeon graphics.
Problem with this is that it needs a lot of stress when installing the first time. If Microsoft wants to be really cool (they are, well, Bill Gates is, already cooler than Apple again when you ignore brainless Apple fan-boys opinions), they come out with a no hassle Windows 7 that installs native from DVD on any mac. Throw in a Snow Leopard pricing: read 29€, and all my Lion Macs switch tomorrow. Boy Lion sucks sideways!
The only problem on the horizon: Windows 8 seems to be copying (Mountain) Lion a bit too much. Microsoft beat the crap out of Apple with their GUI design the last 2 years, so I really like the Windows 8 look compared to the crap faux wood-grain faux letter, faux old dirty paper iApp look, but they should not loose the people who WORK and EARN MONEY with computers out of sight like Apple did.