Jumpers

I have used a bi-wire set of Nordost speaker cable for years and recently upgraded my Valkyrie  (sp?) to Valhalla series 1 in a shot-gun configuration and had a set of Valhalla jumpers made to accomodate the 4 binding posts on the back of my speakers. Interesting when I started the process my local dealer indicated that Nordost had re thought the approach and believes the single run with jumper set up is better over a bi wire cable arrangement. I really like the improvements the new cable and set up make buts its difficult to separate what impact each is making.