I can advocate for Git on a number of levels. Certainly there is reason to evangelize the distributed architecture, but it also has merits for a many other reasons like amazing speed, features, and the like. I am sure that I haven't even scratched the surface yet, but I constantly find git features that make me never want to return to svn.
All that said, I have no experience with mercurial or bazaar, both of which are of similar designs to git.
