In other words, you can freely alternate completion, editing and browsing. The Escape delay when activating menus can be avoided. If you press after Escape any key that does not produce the second character of an escape sequence, ne will immediately recognize the Escape key code as such. Use turbo mode for lengthy operations. This can be a major plus if you are editing very long files, or if your terminal is slow.
Regular expressions are powerful, and slow.
Regular expressions must be studied very carefully. If you spend a lot of time doing editing, it is definitely reasonable to study even their most esoteric features. But remember always that regular expressions are much slower than a normal search. Use the correct movement commands in a macro. Many boring, repetitive editing actions can be performed in a breeze by recording them the first time.