Boutique or Big Brand?

Thank you all for your responses. A lot to think about here.

@missioncoonery &  @mofojo I agree and am tempted by getting a "better" speaker, and a used pair of Sonus faber would allow me to move up the line from the Sonetto V I am considering new, but my concern is that I have been burned before on used online audio (and watch) purchases and this would be a lot of money (for me anyway) to get burned for if it didn't work out again.

I really was saving for the B&W 805 D3. I heard them in Columbus hooked up to the McIntosh MC152, which I have and fell in love. I just couldn't afford them at the time. Now I see used pairs for about $4,500 and am tempted, but I don't want to get screwed again with online used. The new 805 D4 are now $8,500 and out of range. $6,500 for the D3 was doable with saving, but I do not (read shouldn't) want to spend $8,500 on speakers as I have other responsibilities in life.

@audioman58 my room is only 10' x 11' with an 8' ceiling. I know that would normally say 2-way monitor and be done. I feel (and may be wrong) that monitors on stands have the same footprint as a slim tower and If I get a quality slim tower it will probably have a wider frequency response. It is a small dedicated listening room, only the system, some room treatments,  and a chair are in the room.

Nothing wrong with wanting/liking the 805d3. I have heard them a bunch of times and they are fine just a bit bright. Depending on your age a bit of brightness could be good but they are bright enough that bad recordings will be real hard to listen too. Make sure you give them a long listen with the actual music you listen to not just perfect demo music.
 

https://www.stereophile.com/content/bowers-wilkins-805-d3-loudspeaker-measurements

Where something like the Revel 226be has near perfect measurements. Their bass extension is light and the -3 db point is 56hz, -10db 36hz so should be fine in your small room which will bring up the sub bass through room gain assuming they are 24” or less from the wall. Not pushing revel just one example of a better speaker for the same money that I have experience with. There are tons of other brands too. 
 

https://www.erinsaudiocorner.com/loudspeakers/revel_f226be/

anyway I have owned both brands (B&W, Revel, focal, Thiel, paradigm, Klipsch… etc, ) I think you will end up fighting the B&Ws to sound good. Always tweaking toe in, gear etc where the revels are just a plop and drop and sound great as measurements matter. 
 

If you don’t have dealers music direct has 60 day home trials and free returns I think but read the details. 
 

as for buying used. If it is expensive enough for you wait until you can drive and pick them up or get a one way flight and drive them home. U-haul rentals are cheap, Just get a van. 
 

One more sound demo of the B&W 805d3 with the same Focal Sopra 1, different electronics. 
 

Look at Neat acoustics speakers great brand.

1. you have a small room - do not try to push a big sound into it (large speakers - suffocate)
2. your electronics are hi-fi, not high-end... what kind of music do you want to listen to? ...
I would start by replacing the preamp - this amount is enough to buy a CAT SL-1 ... musicality will immediately appear ...
3 . the secondary market is very cruel and rarely sell good stuff. But if you can find Sonus Faber Extrema (do not look at modern models - this is money out the window).

You can buy new ProAc D-2 - good acoustics for reasonable money ... at a low volume it will give deep bass.