Panther: The Good, the Bad, and the Ugly
http://www.asktog.com/columns/061PantherReview.html

Tognazzini, Bruce
Nielsen Norman Group
2004

Abstract:

For a long time, people have been writing me, asking that I do an in depth review of OS X. I held off because I really didn't think OS X was ready for prime time. That's all changed. OS X, in the form of the Panther release, is more than ready.