How are most audiophiles going from streamers to DACS

When in doubt, use the theoretically superior cable. If you can’t, use the connections that your gear has. Distance between components and speakers (cable) should be as short as possible. (low resistance).

bs node 2i offers spdif optical or rca coax for digital bitstream output

rca electrical coax is considered slightly better than optical, use a good cable, ideal length 1.25 to 2 m, most use 1.5m length... good cost effective cables are available from cullen, canare/blue jeans, lower audioquest etc etc - about $100

if using optical, get a true glass optical cable from lifatec, dh labs or the link below keep lengths short as possible - less than 5 m definitely

http://www.youravcablestore.com/digital-audio-toslink-optical-cables.html

Most?
How are you going to get there?
I use i2s, AES/EBU, USB X2, coax and toslink. My DAC designer states that they should sound alike and they do.
No clue what you are trying to determine.

@fuzztone

I have a Node 2I and a Denafrips ares 2 dac thats in transit

i think the op is trying to simply determine what is the best way to connect a to b