What is the best and most complete implementation of Unix system commands for Windows?

Question

I've found a few (unfortunately, they are bookmarked at home and I'm at work, so no links), but I was wondering if anyone had any opinions about any of them (love it, hate it, whatever) so I could make a good decision. I think I'm going to use Cygwin for my Unix commands on Windows, but I'm not sure how well that's going to work, so I would love for alternatives and I'm sure there are people out there interested in this who aren't running Cygwin.

Answer 1

These work very well for me: http://unxutils.sourceforge.net/.

Cygwin is not so good on Vista or 64 bit, so I stopped using it a while back.