ati - Which AMD display driver to install?

I just fresh-installed Ubuntu 15.04 and I went to "Software Center" > "Additional Drivers" to install the driver for my card (AMD 5570 1GB).

But I found 3 "Sources" and I don't know which one to choose. see here.

Or should I use this? Ubuntu AMD Catalyst Install

I'm concerned about installing the driver because I have some minor graphic "glitches". (I can't add photos or more than two links so I can't show you a example).

The second or third options. fglrx driver is the stable version of AMD's proprietary driver. fglrx-updates driver will be possibly less stable, but will get you driver updates sooner. Either is better than the open source Xorg driver.