I'm currently using Acoustic Research 12-gauge copper wire, bi-wired for my B&W DM601 S3 speakers. I'm using a Marantz SR7200 Receiver which is on the "warm" and musical side. Does anyone have experience on upgrading their wire to more popular brands like Van del Hul, IXOS, etc. and noticed a big difference? I'm looking for ways to improve detail and bass with my speakers.