OP sounds like perfect candidate for a Hackintosh. (If talking a self built-desktop.) Use hardware that's compatible with OSX (sites like Tonymacx86 have tons of tried and tested hardware and setup guides) and then run any/every OS as you see fit. OSX, Windows, Linux- it all works fine on the same hardware, no need to buy into any make-believe hardware monopoly to enjoy all the major OS's.
I prefer OSX myself, as most of the software I use runs on it, but ever since Apple switched to x86, it's been nothing but an illusion that there's anything special about Mac hardware (besides a few specialized outer-design features.)
They are just custom commissioned PC's with non-standard form factors, and far too often, last-year's (at best) graphics hardware. I'd rather roll my own than pay Apple an overpriced rate for laptop hardware masquerading as a desktop. The Apple faithful lose their minds over it, but built correctly -and operated by someone that's more into fact-based computing vs. myth/marketing-hype/spin/based computing) a Hack is just as stable in OSX as the real thing, and of course runs Windows and Linux the same as any other PC.