Cuz ……Marantz and tubes? I like!! Not optimized in room yet and may never be due to room irregularities and my nascent knowledge of acoustics, but I pay attention.
Various “affordable” speaker wire until I get the above sorted. Currently using blue jean cuz they’re local. Was using anti-cable that I think sounded a wee bit punchier, but I hated the inflexibility, plus I wanted to try bi-wire (shotgun?). Cables are the next frontier.
All other interconnects are Mogami gold, cuz I like their guitar chords.