Well...first tell us what you want your system to be for: what kind of apps do you have? Are you looking for a distro which brings loads of packages (like Debian
- slightly complicated), or one which is "complete" but fits on one CD, like Kanotix
Personally, though many people may say SUSE, Fedora Core, Mandrake, etc... I would recommend you go for either Ubuntu
. If you take a closer look, the only large difference between them is the window manager, and of course, some of the apps (because Kubuntu brings KDE installed, and Ubuntu brings GNOME installed). Take a look at both and see what you like more - GNOME or KDE. I'm guessing you'll go for KDE, but may I make a subtle suggestion that Ubuntu is slightly better than Kubuntu. Both have amazing hardware detection, apt-get (Synaptic Package Manager is the front-end) makes downloading and installing packages a breeze, and they both look great! What more could you want?
P.S You may also want to check out Distrowatch
- reviews of more than 100 distros out there!