Assuming that you have solved, power distribution, speaker positioning, turntable/ cartridge alignment, components support, any room treatment (if needed), then better cables, no matter if silver or copper, will definitely have a positive effect. Everything matters for achieving a good sound not just cables. You can find a good and reputable dealer and borrow complete sets to try out, and save money in the long run. I have a sweet spot for cables that use means of better conductor manufacturing process so that leaves out for me the majority of the pro called cables. In an era of Triple C, Ducc or even OCC (all of them having advanced methods of manufacturing), the ones using OFC are lacking. But good sound of a cable is not only determined by its conductor but by its overall construction, the materials used, the geometry and the connecting component.
After trying out and experimenting you can only decide what is good for your system.