Windows 7 = Rock solid. I bought my PC in January of this year, it hasn't crashed once.
Get a mac if you have kids whose brains aren't fully developed yet, the big buttons should be easier to navigate. As a bonus, if they spill juice and food on it it won't matter because if you're a good parent you'll be switching to a PC when they reach 3 years of age.
lol
you have no idea what you are talking about. apparently a good interface means its for kids and retards only. only smart people should use poorly designed systems.
unix > anything ms has ever created or copied. couple it with great ui and support and thats why almost nobody ever goes back once they buy a mac.