Not greatly familiar with the latest renditions of Windows, and certainly not with version 10. Don't have good memories of previous Windows versions what with having to defrag all the time, use CCleaner, endure lengthy Windows updates, etc. If that still happens with Windows then I would not be thrilled. I may have already answered my own question, but I just want to make sure of all the details as I will be upgrading. I certainly like the versatility of the HP with the tablet, and touch screen features in addition to having a standard laptop. I have no wariness when it comes to the Mac OS, but I'm still wary of Windows. If there was a Mac hybrid, I wouldn't have any question or qualm.