Good Toslink Cable From Squeezebox Receiver To DAC

Hi

I am abroad and am getting a friend to get me a Squeezebox Duet from the US. I am planning to hook it up to my Mark Levinson No. 36 DAC via a Toslink cable. What is a good cable (cost effective) to order from the US?

I know coaxial is better than Toslink but the coaxial input into my DAC is already taken by my CD Transport.

Any help appreciated speedily please as my friend will be leaving the US soon.

Thanks