Around the time Windows 8 came out I built a new pc and started using Win8 as my main OS. Now, my workflow basically consists of git, sublime, Photoshop/Illustrator, and gulp. I do use putty/rdp for server admin related tasks and filezilla for any ftp needs. I am pretty obsessive about having a clean OS, knowing exactly where my files are, and having as much customization as I need/want and I feel like Windows does that better for me than OS X. I also just prefer the design of Win8 to OS X.

Here is the kicker, most of things I prefer about Windows can be accomplished on OS X, it's just a personal preference. In general, I don't think Windows 8 is necessarily better than OS X for everyone but for me it is better. Find the OS you like, find the tools that you are most productive with, and build great products :)