Dear Newbee: +++++ " The reasons for a sub with monitors is obvious. More and better bass, when they are integrated properly. +++++ "
As Steve told us ( wider soundstage ) the use of subs are not only " more an better " bass, there are other important sound reproductions improvement when you use it.
+++++ " I believe that the best use of a sub is when your full range systems create bass problems in your room because the location of the main speakers creates very uneven bass response. +++++ "
THis is issue is very interesting, I never think about.
You are right: life is a trade off.
Regards and enjoy the music.
Raul.