For $1500 I think your best bet is to look at several of the DIY kit speakers offered at madisound, Zalytron and several others. You will get much better sound for your $$$ than buying full retail or even used. Only problem is you can't hear them first, so you've got to go by reputation, tweeter type (metal vs soft dome vs ribbon), manufacturer recommendations (call them and tell them what you like), and owner comments.
Enjoy,
Bob
Enjoy,
Bob