speakers cables to use with 801s3

which are the best speaker cables to use with 801 s 3 and power amp audio research D400 mk2,pre-amp LS 22 and sony cd XA7ES
April Fool's was yesterday....
A friend has 801 s3 with North Creek external crossovers, Sony cd XA7ES, ML pre, Krell amp, running a pair of Kimber Kable 8tc - Good results.