TBH it is a case of horses for courses> Design work is certainly easier and better on a Mac. Word processing and general game playing, look-ups on Google etc do not need the additional expenditure so a PC is more than adequate. I would personally feel a lot more comfortable with Apple if they didn't admit that they charge a premium price, not to cover costs, pay for research and development etc but simply because they view it as a premium product that people are prepared to pay for. If they didn't sell at the asking price they would drop their prices soon enough but so long as Barnum's theory holds true they will not.
As it is the THW is getting a Mac Book thingy courtesy of her BF's father who is in Web Design and has one available second hand and cheap.