While I have heard the Valhalla on another speaker, I was not willing to commit the $$$. After many experiments, I have settled on the Ensemble Megaflux for my 805N. I had always used Bi-wire, but some reason I can't explain, I went back to a homemade jumper and a non-bi-wire cable. Results are astounding. See the thread....Cables, a case history of an agnostic.... for my feelings about this cable. Note that I am using different electronics and no Sub. I do believe that cables can be very system dependent!