Mauviel M'150s copper and stainless cookware
The excellent heat conduction properties of copper make it an obvious choice for cookware. It's especially responsive to changes in temperature from the heat source, so when you turn down the burner right before your dinner burns, the pans can adjust.
But they also offer the potential for metals to leach into your food, so choosing a pan that's lined with stainless steel — like Mauviel M'heritage line — can give you the best of both worlds. (Experts recommend that you use wooden utensils so you don't scratch the stainless steel, which can also leach.)