ehume wrote:I won't have a problem with GUI.
No, but your hardware might if you use KDE or Gnome with Mozilla
I've heard people saying good things about Debian and Slackware. How do they compare with RH and SuSe?
If you plan on installing Debian, it's advisable to read the online documentation first before hand and to gather info about your system (IRQs, IOs, etc). Work is being done on improving the Debian installer, but it's still rather formidable (I think there's an O'Reilly book on Debian as well). But if you survive, Debian is a real treat since you'll never have to reinstall from scratch again to perform upgrades.
Debian's main claim to fame is apt-get, which is a system for easily finding, downloading, installing and configuring software (Mozilla Firebird is now in the Debian repositories). Because of this, Debian avoids the "rpm-hell" of having to scour the internet for rpm dependencies. Apt-get makes system maintenance easy, a fact that contributes to its increasing popularity as a server install.