What speaker cables for my system ?

I have :
Accuphase P-7000 amplifier
Accuphase C-2400 preamplifier
Lamm LP2 phono preamplifier
Accuphase SACD/CD DP-85
Michell Orbe
Zingali Moniter 115 as speakers
Cardas Reference Power Chords
Interconnect Audio Metallurgy Gold Alloy G2
Cardas Neutral Reference speaker cables bi-wired

I am wondering if other speaker cables could suit better my system. Improve the sound in some way.
I would mainly be grateful to those who know Zingali, Accuphase and Lamm to give me some insights.
Thanks a lot !
Jean-Luc

PS Interconnect cables : are Aural Thrills very good ? As good or better than my Audiometallurgy, considering my system ?