Experiences with Nirvana Digital cable ???

Does anyone have any expereince with Nirvana digital cables? What do you like and dislike about them and what have you compared them to.

Sns talked about the DC-110, which is for balanced hook-ups.
The Nirvana Transmission Digital cable, wtih rca connectors is an excellent digital cable, very smooth and transparent. Most importantly, it doesn't screw anything up.
I've compared it to Cardas, Acoustic Arts, Analysis Plus, Straightwire and I preferred it to the others.