Did a clean install of Win7 - needed since it had been over a year with multiple un/installs during that time, so clean the cruft out. Used a nice app to grab the Win10 License Key so I can do a clean install after SP1 is released (Using Win7 Pro) but had to take it out after 2 days. Unstable as heck on 3yr old hardware (Asus Z97 Pro - A/C Wi-Fi) with E3-1230 Xeon and 8GB of memory. Had multiple BSOD's due to a driver issue but it certainly didn't impress me with that. Then I started seeing what data they're collecting and actually read the blurbs on the Privacy Settings. God Forbid they monitor my email, web browsing, access my Camera and Mike 24/7. Keylogg all of my passwords - Thanks for the ID Theft MS along with all the other stuff that combined with the instability had me wipe the POS off the system. I'm now actively fighting to keep Win7 off the other computers at home (had to clean install and restrict updates to those before 9/2013 just to ensure I had only the critical's for actual issues.
It's so bad, that I'm even investigating moving to FreeBSD (OS-X base) for the stability and security I want. It's my hardware - Not theirs and I refuse to allow them to take over my home/ship/what ever w/o a fight. They'll have to pry the keyboard out of my fingers before they can claim victory. The only thing I have to solve to make the switch is Guild War 2. I know Guild Wars 1 works fine under Wine but GW2 has issues - they're being fixed but still not fully stable. The alternative is to keep running Win7 until support ends in 2020 (unless MS ends it in June of 2016 as I'm expecting them to). Yes I expect them to force everyone in the world onto their Spying/Lying PoS OS called Win10 - keep in mind that it by no means meets HIPPA/SARBOX/FIPS certification and should not be used in any kind of business environment because of the potential for massive fines.
Sorry for the Rant but I'm certainly no fan of what the MS Collective has offered (forced down everyone's throats in this case) and I for one do not intend on being an easy assimulation target as I've used Open Source in the Past and already looking into the only viable alternative out there - FreeBSD. It's solid and with the recent release of the Clang Compiler/Toolchain it's even better then Linux, which has been hijacked by MS with the SystemD - Binary Logging Anyone? Sure I'll take that for $200 - nice to have someone introduce the Windows Registry to Linux Userspace and the problem is, the Primary Development groups for Gnome/KDE and multiple other major packages are now having to maintain 2 seperate versions as FreeBSD does not and most likely will not ever support anything like SystemD. True Software Engineers instead of marketing idiots.