Both, to be fair, have their strengths and weaknesses. Microsoft's OS is unreliable, Apple's newest has only crashed on me five times in two years' use. Windows, however, does have the best selection of software.
As for whether Macs have a command line, yes they do. As Mac OS X is basically Unix made to look nice, it has a full console system. Generally it's found under Applications:Utilities:Terminal.
So yes, anyway, I use a Mac for basically everything, and I like Apple's software. Pages is very much an adequate replacement for Word, and is MUCH less pricey.
Linux I gave up on last month when it kept freezing.
Disjointed post, sorry.
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