Best all around box speaker between 15K and 25K

That was supposed to be Dunlavy SC-VI!

Osborn Grand Monument Reference,
www.osbornloudspeaker.com.au/
Read the reviews

Get out and have a listen to the Vmps RM/X's, at around $10,000 a pair you will have plenty of cash left over for an active X-over and extra amp for a bi-amp setup of these monsters. http://www.vmpsaudio.com/rmx.htm

I have not listened to a pair of these yet, but have listened to their little brothers..Vmps RM-40's.

Dave

I would second the Verity Parsifal recommendation. Their beautifully refined and transparent midrange makes them great for vocals and acoustic instruments. They can rock too, providing your room is not too large.

I wish we'd stop using the term "best".