Both of the PC magazines are really low level consumer titles. Most of 
what they feature are wish lists of new tech gear, but no in-depth 
discussions. A recent cover asks us if we are ready for Windows Vista. 
It seems as though the editors of these two magazines think that PC 
means Windows. There isn't even coverage of Macintosh computers let 
alone linux.

Wired is a business magazine with a strong eye towards the role 
technology plays in the economy. It's a magazine that is okay with it's 
place on the fringe of business commentary. In other words it's not 
trying to be like Forbes or Harvard Business Review. It has a niche 
audience, but continues to publish prescient articles that garner the 
attention of mainstream economists, CEOs, and investors. I highly 
recommend this one.

Personally, though, I'd look to see if Scientific American, Scientific 
American Mind, and The Economist were part of your niece's magazine 
drive and get those.

These are just some thoughts from a bookseller at a Barnes and Noble, 
though, so don't take them too seriously.

Cheers,

Benjamin