This is what the Nautilus File Manager looks like in Gnome Shell 3.8. With buttons on the top to control the view modes and a simple breadcrumbs navigation style, it is nice and simple while remaining very easy to use indeed. Ubuntu 13.04 is shaping up to be the best Ubuntu release yet.
And this is the Ubuntu Gnome Shell desktop with default wallpaper. This wallpaper changes throughout the day apparently. Otherwise it is a very simple desktop environment that allows you to do your work unimpeded. The only problem is that Firefox is not on the favourites bar by default.
This is what Nautilus looks like when it is viewing network shares on a Windows network. The Mongoose network share is on an Ubuntu server machine. The picture below shows us what the Windows 7 file manager looks like by comparison. I prefer Nautilus over Windows Explorer though.
This is a good desktop environment to use on any PC. Even on an old Lenovo desktop computer this desktop environment ran very smoothly. I wish that it had some extensions installed by default. There are only a handful of extensions that work with Gnome Shell 3.8 at the moment. The Ubuntu 13.04 distribution uses the 3.8.5 kernel and Firefox 19.02. The Gnome Edition truly is the best choice on the desktop. Far more extensible than Unity. That is why it is such a good alternative to Windows. Once the majority of the Gnome Shell extensions are ported to Gnome Shell 3.8 release; it will be even better than before.