Metrum Octave vs. 47 Lab Dacs

47 Labs dacs, either Progression or Shigaraki are NOS dacs as the Metrum, I was wondering if anyone might have compared the Metrum to either 47 Lab dacs.
Thank you.
I have an Octave; it uses a much better chip than the 47 Lab; one not usually used in audio applications. This does not mean that you may not like the sound of the 47 Labs better. All I know is that a friend use to sell them but chose another DAC for his own use. He likes the sound of the Metrum very much.