I'm sorry, but I believe the quality of mac is much better than windows. Anyone who owns a mac (And is far beyond computer literate) will tell you the same. Do you all enjoy having that constant paranoia of malware? Sure, blaim it on windows popularity. Given Mac had the monopoly Windows has on the OS market, I strongly believe there would be many less security issues. How about windows stability, seen the BSOD lately? I can't remember the last time I've seen a mac crash, running an OS based off Darwin and FreeBSD (Praised for it's stability and overall quality).
As it's been pointed out, both a PC and a Mac will get you from point A to point B. Just don't be surprised if the PC crashes, or wastes a little more of your time.
A good analogy would be comparing a Corvette to a Porche (A common comparison, and no I'm not a car person >_> ). The performance of a Corvette may be damn close to a Porche which will cost a few extra pennies. But after your corvette breaks down a few times, you'll begin to realize where those few extra pennies were spent

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Also, expect the prices of macs to drop in the future. As more people begin buying macs (For many purposes: Their switch to intel [Which will probally also contribute to a drop in their prices], the popularity of the ipod, the *probable* issues with vista) the prices will drop.