I've tried a variety of speaker cables with my Forte III's and honestly they all sound good. I've used the following speaker cables:
Verastarr Grand Illusion Bi-wired
Cerious Technologies Graphene
Cerious Technologies Matrix
HiDiamond 8
Cardas Clear Cygnus
Duelund tinned-copper in cotton oil-impregnated Bi-wired
Verastarr Grand Illusion Bi-wired
Cerious Technologies Graphene
Cerious Technologies Matrix
HiDiamond 8
Cardas Clear Cygnus
Duelund tinned-copper in cotton oil-impregnated Bi-wired