I much prefer plain Debian 3.0 myself. As for the real differences between libranet, deb, and xandros? It all comes down to installers and admin tools. Debian has the fewest/sparcest ones. The other two have many more, since that is one way that they can show the world that they are different.
If you want to install stock Debian, try this article. It is quite good. I didn't think that installing Debian was any harder than Slack, rh, etc...just different. If you do go this route, try installing bf24 (I think that is the right one), as it allows you greater control over which driver modules are included. Made it a lot easier for me to install my audio drivers when I loaded it.
If you want ease of install, give LindowsOS a shot. It's quite good.
At any rate, good luck. If you have any questions regarding how to install Debian, just pm me.