f I use second most. It has so many uses all of which could be done with / command, but definitely you come to prefer f. I use f( to scan forward to the next open paren. Then I use di( to delete in parens for example to remove the arguments. Uppercase F does the same but backward up the text. Often I use f, to go to a comma. df, to delete up to the next comma as in removing just 1 argument. The only draw back is that f does not have any repeat shortcut like n for next or . for reapply, those do nothing for f. I should mention also that f works on a single line at a time unlike /