Room correcting subwoofer for music?

Marty, is fr frequency range? I was talking back and forth with Bob, he has been a great help. He told me that a properly placed sub will almost always be better than floor standing speakers because of the flexibility to be able to move your bass around to the proper spot. makes sense to me. It also amazes me how much room acoustics effect overall sound. thanks again,Scott

Marty, I appreciate you taking the time to give me your suggestion, I am just not that familiar with smaller speakers and subwoofer or subwoofers. Like everyone else here I am just trying to acheive a great sounding stereo. So in your opinion subs is better than sub? thanks,Scott

Ok another question ,really since bass is the foundation of all music, how much of your speaker budget should be put towards that? I have been looking at this being a add on to make the main speakers sound better but maybe it should be the other way around?

So what's recommended?

My budget is no more than 700 so I am going to just buy larger floor stNding speakers, thanks