...Reasoning behind that one is that documentation floating around for solving Mac problems is quite terrible. A lot of information isn't well categorized and results for very old versions typically come up first. Fixes for problems I've had (getting CLANG to work in a VM under virtualbox, getting virtualbox to work after a restart because they stupidly use OSX features that were phased out) often only came up after digging quite hard to find the correct fix. Support and Documentation are what I do for a living, so I have a better shot finding the right fix than most.
Arch documentation and the forums are like the gold freakin' standard. It actually blows my mind how well organized and thorough it all is. I've yet to find a situation in Arch that didn't have a document to get me out of it...and often I use their documentation to fix problems in OSX and other Linux distros.
Until I can do stuff like `brew install safari` in OSX, e.g. keeping your whole system up to date with one tool, I find it inferior to the Linux package managers. Although I find pacman and emerge better than apt, them being much easier to configure and use.