[Kururin]

Lightspeed seems good,  but nginx may be enough for most purposes. It is based on the available system resources and the number of visitors you have, apache is powerful to handle works,  while nginx care can drop requests which is taking more time, normally I use apache.

Apache is worse in terms of RAM and overhead. Unless you have a powerful system and can scale well I do not recommend apache. Only nginx is the way to go. Can't speak for lightspeed tho.