Depends on the team. If you're part of a technologically savvy team, then git is wonderful (and often more than wonderful). But if some people arn't comfortable on the command line, there could be some trouble (because tortoisegit is in its infancy and all the other GUIs I've come across, frankly, suck).
If you've got not-so-techie people to deal with (designers, higher-up managers, etc.), I'd go with something like subversion. TortoiseSVN is wonderful (and fairly easy to use), and svn's got maybe 80% of the awesome git has.
