Joshua,
Heavy cast iron burners and grates, used in old stoves, hold heat better once they are hot longer than aluminum, or lighter steel or lighter cast iron. It took fewer btu's to maintain the heat under the pan.
Wolf builds a darn good range. I've not heard any complaints. They also cost upwards of 5 grand. Blue Star and DCS, and Viking also make good ranges.
They are also much easier to clean that say an old Garland commercial range you might still see in use in a restaurant kitchen.