I recently upgraded the brake system on my performance car with the Wagner ThermoQuiet MX875 semi metallic disc. Based on our own experience, this product is definitely worth it. The braking performance is significantly improved, especially during high-speed driving .I also noticed less brake dust buildup on my wheels. However, I did notice a slight increase in brake noise, but it's a tradeoff I`m willing to make for the improved performance. Overall, these brake discs are an excellent choice foSee full review