Optical Cable recommendations


Does anyone have any optical cable recommendations?
I want to pull the stream from my Blusound Node 2i into my Schiit Gugnier DAC just for giggles. 
I was told by someone at a cable company that most of the glass cables are made by only a couple manufacturers and not much real difference among them. Makes me wonder about some of the expensive optical cables I've seen.  I've tried plastic Tosslink in the last and it didn't cut it. 
Thanks in advance. 
fredcdobbs