OP: I understand your question, and it is interesting, but who would equate $$ with "good?"
Better yet, go listen to everything you can and pick what you like. I guarantee you that much less costly Magnepan speakers reproduce music better than any box speaker regardless of cost.
Having typed that, I say go for it. There are several companies that box-up drivers in beautiful cabinets and sell them for hundreds of thousands of dollars that are probably decent sounding to some.
Enjoy the music!
Cheers!
