Actually, I carry a shank on me, at all times, just in case this debate breaks out and I have to shank a Mac-head!
Escher, when I'm in Seattle, I spend a lot of time around 4th & Lenora. Just giving you a fair warning.
Escher's response is very detailed, and that is good. My summation is a tad more simple.
For purposes of video editing, choosing between Mac and PC is like picking between six or one half-dozen of the other. Harmonica, half of a dozen is six, so I'm am saying that for this purpose, they are basically the same.
Here are the differences that matter.
Macs are expensive.
PCs have compatibility issues. This hardware doesn't work with that hardware. That hardware doesn't work with that software. Unless you are tech-savvy, you will have many headaches, and it will be less than half a year before your poorly-maintained PC is barely working.
And that is why I recommend harmonica get a Mac.