Both.
Just depend on WHAT will be their use.
'Pc' i think zenax said IBM PC types Vs. Macintoshes.
Ok, i tell why i choosed both.
Mac. Easy to use, graphically superior to windows (thats why Vista is a copy of mac os x), less incompatibilities (mac, apple does everything fits perfectly. Hardware and software. Microsoft? just software, so hardware is of your own choice.), less VIRUS and more secure. Mac IS for graphic programs. Photoshop, Illustrator, FinalCut. All related to graphic, publicity/advertising/propaganda uses mac.
A Mac G4 800mhz 256mb runs a Photoshop 7 4times (!!!) faster than a Athlon XP 1.8ghz 512mb.
But, mac os x isnt a common OS like windows, so, the compatibility with programs and games is limited.
So, for games and general programs, here comes IBM PC type and the Bugged Window$ of Micro$oft. Just because microsoft made just a software to fit ibm's, not an entire new computer. This made costos lower and they made success.
But, in all cases:
Mac = Design, Edit, WORK.
Pc/Windows = Common stuff (word, etcs.. Even if Mac has Ms. Office too, people cant type so fast. the Keyboard is very different and the hotkeys too.), games, enterteiniment (ok, i do not know how write that but i think you got it xD), FUN.
but i <3 mac
Don't knock it 'till you try it.
Also, I hate it when people put "Mac" in all caps. It's a Mac, not a MAC. An MAC (or a MAC address) is a unique identifier your network adapter has. A Mac is a computer.
Lol, i laught a LOT when the IT Manager of where i work said: "Hey, gimme the MAC adress of your Mac, so i can add it in our network."
heh. That was funny.
And yes, Mac = Macintosh.
MAC =/ (dunno how make the 'different' character) Macintosh