Best digital interconnect under 300 used

I would need your help and experience:

I'm looking for a good RCA digital IC to connect my Squeezebox and my PS Audio DLIII Cullen Stage IV DAC.

I'm interested only in used cables. Done some research, my picks at the moment:

Acustic Zen - MC2 = ZEN
Wireworld Gold Starlight 5
Audience - AU24

Which of them would be the best? I like warm, analog-like sound. (I am open to other suggestions too.)

Thank you for your kind help in advance.