$3500 floor standing speakers used. What would be your choice ?

@mulveling - I am genuinely curious about your post concerning phase errors in multi-driver speakers. I was reading Floyd Toole's book on Sound reproduction and he makes a point in that book that phase errors in normal full range systems are not usually bad enough that it has a noticeable impact on the sound quality. Since you say you can hear phase errors, can you describe what to listen for? I may have noticed it in my listening but didn't realize what it was or what to call it. Please explain so I can benefit from your observations as I audition new speakers for my home that's being rebuilt post-fire.

Harbeth 30.2 XD 

Read TAS review. I have them, they are great imo.

Iʻd put together a SEAS Thor kit from Madisound ($2615.00).  They have a number of cabinet makers who can build them and ship them to your door for a reasonable amount.  Theyʻre not all that hard to build yourself.  You could get help from a friend, or just have a local cabinet maker do them up.  

The SEAS Thor kit uses the same tweeter and very similar SEAS Excel drivers to those used by the $14,000 Joseph Audio Perspective loudspeaker.  Thor is a transmission line and will give you a good low end.

Try finding some JBL on Craiglist you won't be sorry

You could buy a new pair of Monitor Audio Silver 500 or 300 floor standing speakers with that budget.