It sucked when Crashplan’s home client went under. If you installed the client on two computers with internet access, it would let you set the remote computer as a target. Encryption was done at the source, it had dedupe, versioning. It ate a little ram but it was really nice.
I’ve run both. Started with Gnome.
I didn’t absolutely love the UI but it wasn’t bad.
Installed a bunch of plugins poked it product tweaked it. Made it exactly what I wanted.
One time I tried KDE and found that it was exactly what I was turning gnome into with all the plugins.
Admittedly, I think the Gnome control panels and tools are nicer.