[cparedes]

I see where you're coming from - however, the great thing about CM tools is that they abstract a lot of the weird differences between UNIX's and Linux distributions. Defining a user in Puppet or Chef will create that user the same way, whether it's in RHEL, Solaris, FreeBSD, etc.

Puppet is also more lightweight than Chef in terms of the amount of dependencies it requires, given an already existing installation of Ruby (in fact, I think there's only one dependency: facter.) The only problem is that it comes with a lot less available language features out of the box than Chef, mainly because Puppet doesn't have a way to store and serve configurations of other machines out of the box without something backing the data store, like MySQL or CouchDB.