[_asummers]

Helm-ag is great too. I tend to bounce between "helm-projectile-find-file" and "helm-projectile-ag" depending on if I'm grepping or looking for a file name. Fuzzy search makes those terrific. Then within a single file, "helm-swoop" is great. And then "helm-resume" to bring up my previous search.

[pmoriarty]

For another, related approach, there's counsel-ag, and the various other counsel/ivy/swiper tools. I've personally switched to those from helm, and have found them to be both faster and much more intuitive to use than helm was.