I've also used some visual tools, but I always end up abandoning them after a short while, since I don't feel that they add to my workflow. Probably just a matter of taste and familiarity then. It's possible that I'd be marginally more productive with a GUI tool, but I'm too comfortable with my current process to bother. I'll admit to straying and using Github for Mac when I've made lots of changes without doing frequent small commits :-) It often beats `git add -p` in UX terms.