I have windows 10 preview and it's ok. I suggest you to stick to Windows 7 however its free for upgrade from Windows 7 or 8. I still use Ubuntu all time:D
I learned that a lot of customers complained about Z5 MAX desktop because privacy issues and no anti virus no security too. ZVRS completely control all customers privacy on Z5 MAX desktop. Customers can't change or have any options on Z5 MAX desktop. The customers still worry about privacy...
America and EU let Russia to sign with China because they know Russia and China can't trust each other for many years. of course, Russia and China both will lose for nothing!!!