Short bio: Computer Scientist, FOSS supporter (read more)
Tux Machines (TM)-specific
I honestly like them all, and I use them all on a daily basis.
Windows 7 and RHEL at work; Windows 8 on my desktop gaming and media production machine at home; Ubuntu and OS X on my Macbook air; Debian my small home server; and a Chromebook to play around and casual web surfing.
I like Windows 8 mostly because of the compatibility, and it makes the most sense to put on a desktop for things that require high-end hardware, like video games and photo editing software.