I'm using Slackware...

But Slackware Linux doesn't have any GUI for installation.
It still use old DOS-like menus. It is not for beginners.
Here is the link: www.slackware.com.

Another one I'd recommend is Gentoo Linux (www.gentoo.org).
I have never used it before but it gets a lot of good reviews
and has a very good desktop like Windows.

I don't like REDHAT anyway since it failed to install to two
of my PCs. Now REDHAT only sells/supports their "Enterprise
Linux".