For digital cable, if you use single ended cable then search my site. I use a cheap cable, do not remember name but there was something in that which call it Platinum. It is ridiculously good cable, they are many years out of production but they do show up on eBay for literally a few bucks. It has ugly blue color. 

I did not know is that you know Bud Purvine. We used to talk a lot and I like him. I have some of his litz cables. Unfortunately you are absolutely correct, for whatever reason they are incredibly boring. It is actually quite remarkable how it's possible to make a cables which completely suck out all life from sound. It would be very interesting to see into it cheaper and to recognize why his cables do it as I feel should be some kind of underlying principle behind it and maybe using this principle would be possible to moderate the "boring" of the cables.

One way and another, get better, Poul. We all going to be there...