Recommend Spk cables for Apogee centaur ?

I just purchased a mint pair of Apogee Centaurs and I'm wondering how cables affect this hybrid speaker. Since they've been around a while I'm hoping others will share their experiences.

I started with Quicksilver silver speaker cables and the 4 ohm tap on an original RM-9 re-tubed with KT-88s.

They have that amazing Apogee stage and I love em, but what else should I try ? Or should l just leave well enough alone ?

Any info would be appreciated.

Thanks, Kirk