Looking for intermediate-step Streamer: better than BS Node and not @ Bartok level pricing

Hi

I have a BS Node.  Yggy DAC.  BAT electronics, Shunayata PCs, AQ SC, and Vienna Acoustic Beethoven Grand Reference Speakers in a wonderful room. I also have a Linn, Shelter 901 MKII and top of the line BAT phono preamp. It all sounds lovely.  I borrowed a Bartok.  AMAZING!!!  And then I returned it, as I cannot afford that level of playback.  I am interested in upgrading my STREAMER -- I think.  (Yes, I know I could upgrade my fuses, room treatment, and everything else I own....)

I am curious to learn if there is a MID-POINT step that others suggest before I spend $25K on the ultimate STREAMER/DAC setup when I retire in a zillion years.  It seems absurd that my system is dependent upon a $550. piece of equipment.  

I am looking for natural sound.  3-D.  I listen to jazz, classical, and rock from the 60s-90s.  No club music/ insane bass.  When the Bartok was in my system, I felt like I was listening to vinyl.  What might be a good landing place for the next DECADE or so??

Thanks in advance.

Joe