It's a matter of personal taste really.
Apple has a pretty vertical supply chain, controlling the entire product from start to finish which does give them an edge as far as build quality goes, but the company... The company is a friggen nightmare to deal with. On the outside they're all smiles and "how may I help you" but you pull back the curtain and the reality is very very different. And they seem to be marching ever forward on the path of the walled garden, where Apple is the official gatekeeper for what programs you are allowed to install. Much like they already do for the iPhone and iPad.
I could go on at some length about a lot of the things Apple tries very hard to keep from being public knowledge, which would quite probably change most people's perceptions about the company, but that's not what you asked.
Despite some inroads from Apple, Microsoft Windows and Office are still what you're going to find in "the real world" (and if you're anything like me when I was your age, you're sick of hearing that phrase), and I just don't see Apple ever dislodging Microsoft. In fact, by the time you finish with college I'd be amazed if Apple isn't already well on the road to ruin again. Apple has been slowly but surely dismantling their computer business in favor of the consumer electronics division. Mac OS X has been getting the iOS-ification treatment in a big way with 10.7 and 10.8, and unlike Windows 8, it's not optional.
Up until recently the major benefit to the Mac platform has been the lack of malware and what not, but it would appear as if the day of reckoning for Mac OS X has arrived more or less. The dam is still holding back the flood, but only just, and there are cracks forming.
Personally, I wouldn't really spend a great deal of time with the Mac platform. I'm not saying don't learn anything about it, but I wouldn't make it a big priority. Tim Cook will likely have become the latest CEO to oversee the demise of an american icon company before you're done with college, and this time there's no Steve Jobs to save the company from the brink. I wouldn't be at all surprised if Oracle ends up buying what's left, since Larry Ellison and Steve Jobs were friends, and it's possible Microsoft will keep propping it up so any time anti-trust regulators come sniffing around they can point at Apple's rotting corpse kept alive at Microsoft's sufferance. If you're looking to go into any kind of IT field, Linux and Unix in general would be where you'd want to focus most of your non-Windows efforts.
I am about ready to finish my junior year in high school, so I've started my college search process and everything like that. One question that I have is, what is the difference between a Mac and a PC? Obviously brands are different, but I'm pondering what I should get when I need to buy one around this time next year. I know technology will change in a year, but just wanted the basics now. My family and high school has always used PCs, but I've seen a lot of Macs on college campuses. What is the difference? Why choose one over the other? Benefits? Downfalls? Any information and/or personal experience would be greatly appreciated!

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