@kingbr I'm able to keep my ddc very close to my dac, so I can get by with 0.5M.
I just got an I2s cable made by Wyred 4 Sound. In 0.5M, it was half price for $99. I'm using it just now for the first time. I'm very impressed. Their 2M length is $149.
My dac is breaking in, so some of the improvement that I hear could be that.