I prefer mercurial over git and will choose it every time for new projects unless there's some other concern preventing that.
Mercurial has a number of features that git never implemented - in particular revsets. I also prefer the hg CLI over the git CLI. Mercurial has sane, concise online help, and a lot of work went into the design of the command-line to be consistent, composable, and made of pieces that do one thing and do it well.
Seconding this sentiment. Far, far, prefer hg to git. TortoiseHg blows away the Git UI's as well, IMO. I always feel like i'm poking around in the dark on SourceTree.
Mercurial has a number of features that git never implemented - in particular revsets. I also prefer the hg CLI over the git CLI. Mercurial has sane, concise online help, and a lot of work went into the design of the command-line to be consistent, composable, and made of pieces that do one thing and do it well.