I have used a few over the last 20 + years including Transparent, Kimber, Shunyata, Voodoo, La Spada...I also just placed an order with Morrow. I have a pair of MA4 XLR IC's and Map3 power cord arriving Friday. Going to try them out and see if they are an improvement over my current Voodoo Essence XLR's and Voodoo Mojo Digital Power Cord on my DAC.
For Toslink I am using a Lifatec-had to throw this one in!
For IC's and speaker cable, another vote for Transparent by far.
For power cords definitely Shunyata.