Customer reviews of Microsoft Windows vary from one version to another. Customers generally rate Windows 8.1 lower than Windows 7, mostly because of the Metro interface of Windows 8.1, which seems appropriate for phones and tablets but not suitable for personal computers.
Another complaint about Windows 8.1 is the redesigned start button, which causes confusion when interacting with standard features of Windows. However, there is some praise for Windows 8.1, such as faster boot speed and increased performance of games and multimedia applications. As for Windows 10, some customers say there are insufficient improvements to warrant releasing a new operating system, making Microsoft's offer to upgrade to the product for free an appropriate decision.