Help with upgrading speaker cables

Audience AU24 would be a good choice. I use TG Audio cables which are silver but they are not bright, they are detailed, smooth and slightly warm.

Audio Note Lexus is another good choice.

With the Bat you might want a little brightening, which might not be bright to the ear. Maybe try a silver cable like the Analysis Plus. I personally really like Reality Cables. I think they sound amazing with SET amps.

I am using Vandersteen 5A and tried many brands of cables including Kimber Select. The best were Anti-Cables - not twisted. Their performance with my components was better than Purist, Cardas, Audioquest, Analysis Plus, Wireworld, etc. They are cheap and you should try their money back guarantee.