Hi, I'm on my first post too... and since I own both the Chord Mojo 1 and the ifi micro iDSD Black Label, I can tell you that, in general, Chord has better detail while ifi has better dynamics. From what I have read, the Mojo 2 exceeds the limits of the 1 (which were listening fatigue, narrow soundstage and little bass dynamics), while the Grifon does not appear to me to be an improvement in sound compared to the micro iDSD BL, except for the balanced output and bluetooth (which I consider non-essential). So I too would recommend looking more at the Mojo 2
Good luck
Max