Upgrade Bluesound DAC or go to Aurrender?


I want to go up a good step in SQ, I listen mostly to my Bluesound Vault2 and LP’s, streaming only for background music. Do I get a outboard DAC for the Bluesound ($3-5k) or switch to an Aurrender like the A10? Vote here. 
128x128deadhead1000
I have the Bluesound Vault 2i with Ayre Codex sounds very good but the Aurender n100 with same DAC sounds better 
I'm looking at Aurender N10
+1 for Node and Codex. 
I used that for 3 years.
I tried the Aurender N100 with the Codex and didn't find it a significant upgrade (though it sounded better at Audioconnection so YMMV).
Bob