I use 3ft glass (280 strands) Toslink from uniqueproductsonline.com ($40) with Benchmark DAC3 HGC. Toslink transitions are slower than coax inducing jitter in presence of system noise, but it can be great by not injecting electrical noise and not making ground loops. It is also free from jitter in coax produced by reflections. As I understand it less transparent plastic Toslink slows down transitions (to threshold point) even further making it a little bit more prone to jitter.
I use Toslink as more practical, since Benchmark DAC has good jitter rejection. Jitter shows as a loss of clarity so I would look for that, when comparing Toslinks.
Toslink optical cables: Audioquest Optilink 3 vs Glass?
Has anyone compared AQ Optilink 3 to a glass Toslink cable at around the same price? I paid $60 for the Optilink 3. Not wanting to spend $260 on the WW Supernova 6.