I've also read exactly what Megasam mentions about the longer toslink lengths being better. Seems to be an issue with less jitter in one meter or 1.5 meter lengths.
I own the Mapleshade Double Helix and Cardas Lightning L-15, but am currently using the Kimber Illuminations D60 in my setup. Very dynamic and quick, but not harsh. The Cardas is a little fuller than the D60, but a also bit more veiled. The Mapleshade is the smoothest of the bunch, but also the least dynamic. It all depends on your system and tastes. Good luck!
I own the Mapleshade Double Helix and Cardas Lightning L-15, but am currently using the Kimber Illuminations D60 in my setup. Very dynamic and quick, but not harsh. The Cardas is a little fuller than the D60, but a also bit more veiled. The Mapleshade is the smoothest of the bunch, but also the least dynamic. It all depends on your system and tastes. Good luck!