I think we’re there right now, and the leader happens to be Git. I think it’s OK (powerful but hard to learn) for hard core developers, probably not for teams where retraining would be an issue and who are happy with what they’re using.

I’m not bothering to evaluate others at this time. I’m working with Rails, and that community is leaning toward Git, so there’s a very high cost to me if I were to use something else for my work and then Git for everybody else’s work (plugins, etc.).