Can anyone recommend me some speaker cables?

I am using a Sugden IA4 with Harbeth P3ES. Currently using Mogami 2972 but fancy trying an upgrade.

I believe Siltech are excellent with Sugden amps but the higher end stuff is too pricey when bought new and not a lot of it comes up second hand in this country.

So I am after something that will pair well with the Sugden. Play a lot of jazz, blues soul these days and I don't want anything too bassy, but I do like some brightness and lots of detail.

Looking at about £500 budget new or used, but will go higher if need be.

Any suggestions?