Pros: Fast, Feels like windows 8 and 7, Sleek and Very Customize able, New Looking File Explorer, Comes Packed with Windows Defender, You can have multiple languages, Action Center, The Volume Bar is Back from windows 8.1,
Cons: Windows Defender sometimes doesn't Work
I bought Windows 7 Ultimate years ago and first installed it on a Bootcamp partition on Mac. I always had trouble with dpc latency issues that ruined my recordings so I didn't like using it. Now I got a custom PC and got the opportunity to update my Windows 7 Ultimate license to Windows 10 for free. It's the best Windows system I've ever tried. Very stable and rock solid!
"The Windows 10 Beta (Technical Preview) is absolutly fast, nothing like bad bugs! Use the Windows 10 Technical Preview on my private and my bussines PC, and I'm very excited for the 1.0 Version!" - Dominik Lawetzky