I think the biggest thing in Git's favour is its ubiquity. New hires are going to be more likely to have used Git; It's increasingly harder to get non-git hosting; documentation and help on the internet is easier to find for Git.

It's hard for people with tooling and repositories around subversion to move over, but I think the longer you put it off, the more likely it'll be that you have to do it and the harder it'll ultimately be.