After a year using ElementaryOS, I'm planning to switch to another distribution.
I'm planning to go on Linux Mint (I need a stable machine with all the tools I need easily installable)
Now, I have to choose between KDE and XFCE. I've used KDE a little but I didn't get the point of all those widgets but I'm still open-minded. I've used a pure version of XFCE that was shitty-looking but was good at use.

Can you give me your opinion on both Desktop Environment?

So I want to start my adventure with Linux. What distribution should I choose?

Which Linux distribution should I choose? I'm a first time Linux user and would like to dual boot it with my Windows 10. I would like to be able to customize a lot.