Node2i + Qutest or Yggy or Codex or something else

Need help to decide ...

Which is a better choice for me:
Chord Qutest
Schiit Yggy
Ayre Codex 
Some other DAC

to go with the following system I have:
Sonus Faber Venere 3
Parasound P5 and A23
Bluesound Node 2i

Music:
Mostly classical music especially symphonies 
Jazz, rock, pop, vocal

Environment:
hardwood floor 


I am not getting the clarity and the sound stage I want when I listen to symphonies like Beethoven Symphony 5 or Violin Concerto.  

Is an external DAC the right solution? Or a better amp?

thanks.