Dminches, I do no know them all. But here is a review of two of the on AA:
http://www.audioasylum.com/audio/general/messages/233584.html
Also, you can search Google for 'glass' and 'toslink'.
Since Toslink tranceivers (the little part on your equipment you plug the cable into) cost as little as four bucks, vs. ST glass optical tranceivers which cost at least $150, one determinant of whether or not you'll get better performance (than coax digital) with a good Toslink, is obviously what grade of tranceiver your component manufacturer has used in your equipment. Unfortunately, you have no control over that.
http://www.audioasylum.com/audio/general/messages/233584.html
Also, you can search Google for 'glass' and 'toslink'.
Since Toslink tranceivers (the little part on your equipment you plug the cable into) cost as little as four bucks, vs. ST glass optical tranceivers which cost at least $150, one determinant of whether or not you'll get better performance (than coax digital) with a good Toslink, is obviously what grade of tranceiver your component manufacturer has used in your equipment. Unfortunately, you have no control over that.