For the most impressive top end, I recommend Silver Audio Symphony 32 or 48. It's extremely well extended, resolved, and silky (no trace of harshness).
The Cerious do many great things (for example, its PRAT is the best I've heard of any cable in any price range). The top end, however, is a little soft. They offer a full money back auditioning period in case you are still interested in giving them a shot.
Kurt, I think you own the better cable :) I've never used the Vahalla, but I've used various Nordost cables up to the Valkyrie model (seemingly recently continued, but was the model below the Vahalla). The Au24 is a better cable IMO. I think to many people fall for the "more expensive is better" line of thinking.