I quite like Debian, and use a couple of OSs based on it. I was thinking of dual booting it with Windows 8 until a recent incident where it crashed halfway through installation in a VM when it was in the middle of installing a boot loader, leaving me without one.
On a side note, has the gaming problem on Linux improved to the point where it is possible to overlook it? I have never played games on Linux before, so I don't know what the support is like now.
Windows 10, but I have Linux Mint just in case Windows breaks, and I'd just use that if game support was more widespread on Linux