I don't use XCode. I usually use vim, but I'm learning emacs at the moment and tend to use that for any new projects I work on. I'm not an iPhone developer, so

I don't use XCode. I usually use vim, but I'm learning emacs at the moment and tend to use that for any new projects I work on. I'm not an iPhone developer, so I can't speak to that. Visual Studio is definitely a much nicer IDE after you get ReSharper installed (VisualSVN is a nice addition as well). The mac is nicer to develop on because of its unix underpinnings. Things in emacs tend to just work where it's a constant battle on windows. Beyond that, I'm very lazy. Most of the stuff I work with at home has been written by people on macs. I have a much higher likelihood of things working "out of the box" when on a mac than I do on my windows machine. I don't have anything bad to say about Microsoft in general (although I would love to have a heart to heart with the MSDN team), it's just that OSX feels like a much more developer friendly platform than Windows XP or Vista do.