After using all desktop environments out there, I have settled down with Ubuntu's Unity because Ubuntu is very focused in providing a consistent desktop experience. Yours and Canonical's definition of desktop experience might be different but looking at other comparable interfaces Unity is very well organized. There are no surprising changes in each update like Gnome 3. Notification and system tray are traditional and consistent. I keep open 4 applications that I use all the time and switch between them either by mouse or alt+tab or alt+`.