By far the difference of using Ubuntu Linux V.S. GNOME, KDE, and Red Hat for end users exceeds expectations.
Ubuntu includes an Update Manager similar to Windows platform which helps keep your operating system up to date with the latest patches and software upgrades, easy to install, secure - no viruses, cloud system included, user friendly, very fast, very stable, and I recommend it if you are new to the Linux environment.
To get an idea how the landing page looks like after loging in to Linux Ubuntu OS, see below the sample screen shot of my Desktop.
Notice the Desktop tool bar at the top of the screen, has great features for chatting, email, and other combined sources in to one control which i find very useful and not available in Windows or Mac OS.
You can download and install it from:
http://www.ubuntu.com/download
You can also test it online before installation:
