Lots of good information above and quite honestly the choices are unlimited making a selection very difficult without auditioning the speaker cables in your own system. With that said let me add to the list the Lavricables Grand cables 5N silver, should sound very nice with your set-up.
Speaker cable recommendations
I have a tube preamp with SET tube amps. Currently my IC’s are Audio Sensibility Statement RCA’s. I’m looking for new speakers cable that are light, flexible and that would have synergy here. Budget under $1k
previously I’ve enjoyed Audio Sensibility and Cerious speaker cables, but they are too bulky and heavy. So maybe something with similar performance but thin and flexible. As I’ve been reading I’m thinking I’d like something with air dielectric.
some options that have popped up could be
Grover Hoffman Pharaoh
Audio Envy SP12
Zenwave SL17
looking forward to sow ideas.