Newbie Question - KDE-Gnome-xfce

[Randy Patterson <tech@patterson-pcc.com>]

I have only had Debian up and going for about two weeks. Had Sarge installed 
but had problems with my USB hardware so just did a clean install of Etch. 
Works great!! Since I am a new user I don't have a favorite windowing system 
that I prefer and was wondering if someone to point me to a good link that 
would describe the strengths and weaknesses or pros and cons of each system. 
KDE installed as default with Sarge and Etch so I assume they chose that for 
a reason and it is the only one I have used. I have looked but haven't been 
able to find a good comparison them.

Thanks,
Randy