what speaker new or used for 5k?

((If congestion is the problem you might like the coherent sound of Vandersteen, but be aware that they are said to be very sensitive to what you feed them, so a change like that alone would not necessarily signify the of the changes needed.))
Vandersteen's and Parasound work great together

Jughead let me know if you would like to try a pair if no local dealer.

(((but is expecting to get a pair on trade not sure what model but I'll ask.)))

Jughead
You will want the Vandersteen 2CE Sig II with the latest
Five As Midrange,Tweeter,ETC
The way you can tell you shine a Flashlight into the Midrange and if it looks like a pigskin Football you are in luck.
These will smoke any other generation Vandersteen 2 or 3 series like they are broken.
Best JohnnyR