MOTM

One other point relating to what Roger just posted.
If you monitor at a level of 80-85 db you will find that your 
perception of loudness as well as pitch is improved.  You will also 
be protecting your hearing and be able to listen attentively for a 
much longer period of time without as much ear fatigue.  
There have been recent studies that show as much.  
And those of us over 50 need whatever edge we can get.
I almost always rely on nearfield monitors as well, but I also use a 
Subwoofer.  I try to keep it flat with the nearfields, but it's 
difficult to do at different volume levels due to the loudness 
factor.  I have found that if I have that perception of "felt" bass 
at a lower volume level I don't feel so inclined to crank up the 
volume, although every once in a while the old rocker in me comes 
out and the volume goes up.