I hate a fee things about Gnome, like how hacky it is to get any screen shot app other than Gnome's to work. Having said that, I tried KDE for a few days, then I tried to customize it to simulate my workflow I think it Gnome as much as possible. Both experiences were a complete fail. It's very hard for me to move from Gnome. Let's see what Cosmic brings to the table in 2026. It's way closer to Gnome in many ways.
As for tour question, to me the DE is 80% of the experience.