Bartok Apex vs Lina DAC

Currently have the Lina DAC pared with the Riveria AIC-10 and Susvara HP. Im thinking of selling my Lina DAC and moving up to Barton Apex?

Thoughts, suggestions, experience?

I was recently at a dealer demo of the complete dCS line. For my ears there was a significant difference between the Bartok Apex and Lina.

FYI I owned the original Bartok, original Rossini, and currently the Rossini APEX

Thx, I had an original Bartok 2 years ago, love it but at the time that was my only amp and I could not live with it with Susvara but it was outstanding with AB 1266. I then moved to Lina stack , but I am really curious about the Barttok Apex with my AIC-10