How are most audiophiles going from streamers to DACS

when I said in transit I meant its physically on its way to me in the mail , so I just need to buy a cable to hook it up when it gets here. 

I have 3 ways I can hook my streamer (node ) to my Dac (ares2) I just dont know what way would be the best   1-optical, 2 coax, 3 USB A to B . I dont know enough about the pros and cons of each and apparently theres a difference in audio data and digital data im just confused at this point . I read optical breaks the grounding therefore its like getting a free galvanic isolator but there is a drawback to , no 1 cable gives you all the pros and no cons , I just would like to know from someone that knows what's the better connection for connection a streamer to a dac thats all cause I don't know.