Best DAC for my system?

Kick the node and go straight to a Lumin D2 streaming DAC.
$1600 to $1800 used but your ears will thank you immensely.

Pro- Ject Pre Box S2 is  $400 at Music Direct with a 60 trial period. If you use Tidal it will do MQA if that matters to you. 

I have a node 2I and bought a used Benchmark DAC2 HGC from a member here and am very pleased. Just my 2 cents.

ddude003 makes a good point, you’re feeding some higher end gear with a lower end streamer. If streaming is a major part of your listening experience you owe it to yourself to have your streaming components be of the same caliber as the rest of your system. At the very least, a GOOD external DAC for the Node. I honestly don’t think you’ll find that for $500. Also, there are much better streamers out there than the Node.

The Pro-Ject Pre Box S2 at $400 is a stereophile class A recommended DAC. Someone mentions what they are comfortable paying I'll guide them to the best I can find at that price not something 5 times the price.

I was pleasantly surprised by the Pro-Ject Pre Box S2 Digital. This tiny, inexpensive box offers almost state-of-the-art measured digital performance.