Advice from Audiogon family - best speaker $3k-$4k

If you have the room to set them up properly, Magnepan 1.7i.

A great alternative to Sonus Faber would be Vienna Acoustics. 

If you like B&W (as I do), try to listen to the ATC models in your price range. BTW, I think B&Ws so good, it's hard to imagine anything price-comparable which is "superior on every level". Bass could be better, but subs easily help this.

Sonus Faber makes a great $3 k speaker , monitor audio Also 

myself just bought a used $5 6 yr old Dynaudio 3.4 ,,excellent design,build quality,

and drivers , I spent $1500 on upper end Xover parts and wiring 

now the speaker is better then many $10k+ speakers ,add the Svs 4000sb sub you have a excellent full range speaker system for a 1/3 the cost of a new speaker of = quality.

OP,

Are you looking to replace your 804s or speakers for a 2nd system?