I can't comment on debians power to control a bunch of computers at once,all i will say is i've been using it for a good while now and haven't noticed anything out of the ordinary in that respect, thats not to say its not there tho. The thing that gets me about debian is apt and dpkg, utilities for controling the installation of packages - if you have a properly configured /etc/apt/sources.list you can grab packages off the net with "apt-get install filename", you can update your debian box with "apt-get update" followed by "apt-get dist-upgrade" - that combined with the community aspect of debian makes it a winner in my opinion.
