I have pre-ordered spore (5th of September!) and it comes with the potion of being installed on either OS X or Windows on the same disc. I am running boot camp (XP) for my game that are PC only (though i don't have any games on the mac side yet). I was going to install it on the OS X side, but i have heard that games run better under windows (something to do with porting it over). What should i do, install it on OS X or on XP?