LS50 Wireless connection preference?

I’ve got a pair of KEF LS50 Wireless speakers and am wondering what the best route is for connecting them? Right now I’ll be using a MacBook Air and can go USB but I may buy a Node 2 or Aries Mini and go optical or coaxial. I want to utilize the DACs in the KEFs though. Which route is the best way to go for sound quality? I’d rather not go analog or add anything else in the mix.

Thanks for any advice.