Hello! I was completely set on my PC build but now I can't decide whether not the I7-6700K is worth it. If it is only able to run on Windows 8, 8.1, or 10 then that is a huge deal breaker for me. I have been using Windows 7 without a problem and I have heard the awful problems with Windows 10 especially with privacy and spyware. I also found a great Z170 motherboard for the I7-6700K which is the MSI Z170A XPOWER Titanium Edition which is a great board and fits with my scheme beautifully. My other option is the I7-5820K or 5930K. The only problem I have with getting a 5820K is that you need a X99 motherboard and most out there seem to have a lot of problems but I could still use Windows 7. If anyone can give me some help or just opinion/advice that be greatly appreciated. Thanks!