Good review and summary of the strong points that are common to every ZYX model I've heard (most of them). IME, you can certainly get more of what you're missing from higher model ZYX's.
For much less than $4K, the Airy 3-X-SB provides more "oomph" than a Yatra.
For right around $4K, the 4D-X-SB provides a *LOT* more "oomph", about as much as anyone could ask. If you're in North America you might get a deal from SORAsound, especially if you trade in a nearly-new Yatra.
Going beyond your price point, the UNIverse 2-X-SB provides as much "oomph" as the 4D, plus even more speed, clarity, low level detail, microdynamic subtlety and timing accuracy. It takes all of the points you mentioned to a level you've possibly never imagined.
With regard to your observation #4 (the front of the sound stage):
- the Airy3 should bring it roughly even with your speakers (without losing any soundstage depth)
- The 4D will bring it in front of your speakers (again, with no loss of depth, probably an increase)
- the U2 does something altogether different: it erases the front of the soundstage completely; there is no sense of any barrier between you and the music, it's like you're in the space where the recording was made... when you first hear it it's quite spooky, and jawdropping (as was the UNIverse1 in this regard)
Read the reviews by my signature for my take on these models.
For much less than $4K, the Airy 3-X-SB provides more "oomph" than a Yatra.
For right around $4K, the 4D-X-SB provides a *LOT* more "oomph", about as much as anyone could ask. If you're in North America you might get a deal from SORAsound, especially if you trade in a nearly-new Yatra.
Going beyond your price point, the UNIverse 2-X-SB provides as much "oomph" as the 4D, plus even more speed, clarity, low level detail, microdynamic subtlety and timing accuracy. It takes all of the points you mentioned to a level you've possibly never imagined.
With regard to your observation #4 (the front of the sound stage):
- the Airy3 should bring it roughly even with your speakers (without losing any soundstage depth)
- The 4D will bring it in front of your speakers (again, with no loss of depth, probably an increase)
- the U2 does something altogether different: it erases the front of the soundstage completely; there is no sense of any barrier between you and the music, it's like you're in the space where the recording was made... when you first hear it it's quite spooky, and jawdropping (as was the UNIverse1 in this regard)
Read the reviews by my signature for my take on these models.