Mike, your question about whether you'll be able to tell the difference between a $350 sub and a $1100 sub can't be accurately answered in the abstract. The first variable is of course which particular $350 model or $1100 model. In audio equipment, as in everything else in this world, you very often don't "get what you pay for". A more expensive speaker or sub may or may not be audibly superior, and when it is better there's a noticeable tendency(especially on the part of the new owner)to exaggerate the degree of difference.
