Thanks for the responses. I currently use Van Den Hul Teatrack Biwire Speaker Cable. Can't say there's a specific improvement I'm looking for but rather am looking for an "overall" improvement. Some opinions I have gotten in the past are that Van Den Hul Teatrack is not that great. I'm sure there are better options out there, I just don't know what they are.
Budget for the pair is $3,000.
Thank you!