I love Helm. Tab completion is fine when you know exactly what you want and the point is just to save some keystrokes. When completion involves some exploration

I love Helm. Tab completion is fine when you know exactly what you want and the point is just to save some keystrokes. When completion involves some exploration is where Helm shines and is way better than tab completion, as it doesn't requires knowing the order of parts of the string to complete and support regexps. When exploring some large code base, or trying to get at a rarely used emacs function or variable whose name you don't remember exactly (but it's about foo and bar for sure) there is definitely this fuzzy discovery element. And then the Helm approach is a blessing. Helm is completion + efficient exploration and discovery.