I have worked both with mercurial and git (3-5 developers). Git has definitely more features, but there aren't useful that much. Things like rewriting history

I have worked both with mercurial and git (3-5 developers). Git has definitely more features, but there aren't useful that much. Things like rewriting history is often quite confusing and it is pretty easy to shoot yourself in the foot. It also got tons of quirks. Personally I think that git is over-hyped. A lot of developers said to me how git is awesome, but it seems that they spent much more time maintaining code then on the other VCS/DVCS. Hg just work, it is easy to learn, gives much more meaningful error messages... and got all of the major advantages of DVCS, but it has much less fans then git. So the question is whether you want to focus on developing an application and use DVCS as a tool. Or rather playing with your DVCS is a fun itself. First case pick Hg, second - git. Note that my comment applies only for small teams. I have got absolutely no experience with big projects(> 30 developers, > 2 years) so YMMV in that case.