Well, I can give you my $0.2 worth! I will warn you though, it is biased!
I love Macs - wouldn't have anything else. In fact, I did buy a PC desktop a few years ago because my husband needed to learn to use the computer and he had PCs at work. I've only used Macs - I'm in education and that is all I have at work and that is what I bought for personal use too - until I got the PC.
I absolutely hated the PC - hated it everyday I had it. BUT, I think that is because I don't understand how computers work and I think that you need a basic understanding of computers to run a PC.
The Mac is different - it does everything on its own automatically! I love love love it. Now, granted I don't do programming or anything like that - which I understand a PC is much better for.
I've had a Mac iBook (laptop) for 3 years - absolutely no problems - really love it - still use it for travel. It was my only home computer for a couple of years - I used it every evening at home. I just got a new iMac desktop - WOW! is it ever nice.
The only issue I have had with the Mac laptop is that now after 3 years, it is running more slowly. I have a 3 year warranty which isn't up till March and I think I will take it in to see what is causing the slowdown.
Anyway, that is my opinion. The only thing that I will say is that sometimes PC users don't like the Mac - why? I'm not sure. I think it is the most user friendly computer on the market. Let me tell you - if I can use it - ANYONE can.
I do have a word of advice. I think you are getting ready to go to college - right? Does your college primarily use Macs or PCs? You can call and find out. Anyway, my university is a Mac user and so many of our students use Macs because of that. It is OK to use a PC - but it is something for you to think about.
Also, I think Macs might cost a little more - not sure about that.
Good luck on your decision - if you decide on the Mac, I don't think you will regret it!