Agreed. I use Arch, Debian, and Mint with Xfce on all of them. It’s stable as a rock in every iteration.
That being said, Debian’s the distro famous for out of date packages, so its a little silly that Mint has it beat in this regard.
I also work as a sysadmin maintaining all these devices, and every time I move files between the laptops running Mint I’m confronted with Xfce’s old file transfer dialog. You’re gonna love the improvements 4.20 made when it finally hits the repos.