Cables for Leben/Devore- Nordost?


A few years ago I transitioned rooms and sold my main system (kept my cables for a while) and downsized to a pair of Devore Nine and Luxman 550AXII and Leben 300x with Frey 2 and some Valhalla cables, I had the QB8 and QX4 regenerator.  It sounded great- really fast, clean, attack, decay, it had energy but never bite (sure some recording were not good).  My kids, wife and I did blind tests all the time, changing this and that, and we could always tell if the QX4 was off, or if an interconnect was changed out- so cable skeptics- I'm not looking for that lesson.  Yes it was the last 15% and it was expensive. 

Now I have an O/93 and CS600 and am considering upgrading cables in the future.  I currently have more generic cables and can "hear" what I am missing- or not hearing.  I can work back toward Nordost but feel like I should ask about other looms.  I always read about Auditorium 23 and Tellurium, but I'm wondering about other options too.  Has anyone heard and of these 3?  Any other ideas?   I'm not opposed to cheaper options, but if you tell me to try the wires you got from your grandfathers pacemaker, please at least be able to compare them to something reasonable. 

Thanks gentlemen!       
bjesien
I can't say enough good things about Silversmith Audio Fidelium cables. I currently have them on my Pass Labs INT 250 and GoldenEar Triton Reference. I was using Synergistic Research Atmosphere X Alive and heard an immediate and decidely better sound with the Fidelium. He offers a 30 day trail.
David, I took a closer look and found a great review and some positive threads on the Fidelium.  How long have you had these in your system?  Did you notice the soundstage layering to be better?  The Nordost were capable of great natural transient attack and decay and I assume these have this in spades? 
It has only been a few weeks now with the Fideliums. I am still very, very pleased. The soundstage is wide and deep. The only comparison I have is the SR Atmosphere X cables I replaced. Those sounded great but so much better now. My music ranges from acoustic singer songwriter to progressive rock on redbook cd. No classical or jazz or pop and no vinyl. I normally listen at the mid 70's dbs.
I have Tyr 2 XLR's (5.1 channel system) and Valhalla 2 speaker and reference jumpers (front left/right). Nordost is amazing. Definitely my cup of Tea. Pure, musically satisfying with a delightfully layered and detailed musical presentation. 

Since you liked your originals why don't you audition sets of the new series?
I use A23 between my Antelope Zodiac Platinum and Wavac Ec300b as well as A23 speaker cable to my Duevel Bella Lunas. I use Nordost Valhalla power cables on both units but find the A23 signal cables nimbler and more transparent, especially with reasonably high efficiency speakers.