Asmith- Depends on your budget. I am currently running Cardas Golden Reference and ordered new interconnects last week and new speaker cables are on the horizon :) I decided going with Jena Labs symphony interconnects and twin 15 speaker cables. They are the most reasonibly priced cables that offer truly great performance-if something doesn't sound right in your system it is not the cables it is something else. They sound like music, others to consider are Tara-the one, and the zero; Trasnparent Opus, Nordost Valhalla(sounds VERY similar to jena). I would start with interconnects first and then maybe try speaker cables, from my experience your speaker cables are pretty good and the interconnects seem to be the weaker of two. It would help also if we knew what you are running for gear, if you are running a SET amp and horn drivers then my advice will be worthless :) if not www.jenalabs.com
~Tim
~Tim