I found the Wireworld SuperNova 5+ to be as good as very good SPDIF in my old rig. I do like the electrical isolation Toslink provides - I think it makes an important difference.
The other point is strictly practical - you can get a 3m Wireworld for the same or less as a good (but not insanely great) 1m SPDIF.
The other point is strictly practical - you can get a 3m Wireworld for the same or less as a good (but not insanely great) 1m SPDIF.