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Gnome and KDE are the alternative. If you don't like speed, simplicity and well design desktop, maybe you could try Gnome or KDE. Both desktops provide you with a unique experience that you can't find with Xfce (long greatings, lot of complicated ways to do the same thing, confusing menus and sub-menus, inconsistant bars and very much fun). KDE and Gnome are fuzzy alternatives if you like that.