usb vs toslink?


Is it superior or hype?
currently i have my laptop computer connect to my dac by Apple AE by toslink cable. Is there a big improvement to use CAT 5 directly from computer to a USB converter or USB DAC.
has anyone try this , please share your experience

thanks
a1126lin
van den Hul Octocoupler is available in 3 configurations:

1) Toslink to Toslink
2) Mini to Toslink
3) Mini to Mini

Ckorody, when Toslink first came out, I thought that it was only available in plastic, as opposed to the AT&T Glass cable [not compatible with the Toslink terminations].
My PC is about 100 feet away from my DAC. If I am not mistaken, Hagerman usb converter uses usb cable not CAT5. So, the 15-foot limitation on usb cable length would be an issue. (The optic usb cable is very expensive and such it's out of question.) Is there any alternative to it?

What do you think of Squeezbox which uses CAT5. (It costs more than double the Hagerman's usb.) Any other inexpensive choices?
Check out this thread for comparisons among different digital playback methods (e.g., Toslink vs usb vs CD-R, etc):
Digital Playback Comparison