Debian stable with KDE Plasma. Plasma is similar in feel to Win 10, but far more customizable. It's the first Linux desktop I've used that feels professional and polished. Short video: https://www.youtube.com/watch?v=dZ6bojRSIw0

100%. I run this combo on my 12 year old Chromebook and it's a very solid web browsing and thin client system. Audio works, Wi-Fi works, Bluetooth works, everything just works, and works well.