One thing that you should know. The market dynamics are changin due to the internet. Small companies that sell direct are not only have the best values, but sometimes their products also have the best performance.
Aside from this, I would recommend high-purity silver for interconnects. There are several companies that make good ones. Beware, cheap silver cables can have significant high-frequency sibilance, often confused with "brightness". Avoid these. Also, with interconnects, the lower the capacitance per foot, the better. You can hit the top of the performance curve at about $500-$800 per 1 meter pair, but beware the companies that spend a ton on advertising. You are mostly paying for advertising with these guys.
Aside from this, I would recommend high-purity silver for interconnects. There are several companies that make good ones. Beware, cheap silver cables can have significant high-frequency sibilance, often confused with "brightness". Avoid these. Also, with interconnects, the lower the capacitance per foot, the better. You can hit the top of the performance curve at about $500-$800 per 1 meter pair, but beware the companies that spend a ton on advertising. You are mostly paying for advertising with these guys.