I'm using the Elco digital cable (the nicer model) and it sounds pretty great. I've compared it directly to the Cardas Lightning 15 and Acoustic Zen MC2. The Acoustic Zen is a little more laid back sounding than the others, but the Elco has just as much detail...maybe more. I'm not done choosing yet, but I think the Cardas may come in 3rd. They're all a little different as far as detail, soundstage, and tonality, so it can be hard to choose which I prefer...it depends on the recording, my mood, etc. All the rambling aside...the Elco is a great cable, but it's $650 retail price is ridiculously high (though, based on what I've seen, it doesn't seem like they stick to those prices too often).