I have found KDE excellent and intuitive from the get go without much customization. To me GNOME is very primitive in comparison and ugly too.
KDE is the DE that made shed the bias again linux UIs as having that crummy look that set them apart from commercial desktops.
Sure it has issues (which mostly crop up when you are doing deep customization) but for the basics I don't even think any other Linux DE come close.
I think it all really depends on the wants and workflows of the user