different brake line materials what do you use?

I love the ni-copp tubing. On the other hand, if im restoring a car and it needs all new lines I just order up a set pre-bent.
I keep several rolls of ni-copp, zinc plated steel, copper plated steel and coated steel line on hand. Yeah the material used depends on the job at hand. ni-copp is the most expensive option. I also keep rolls of the tubing armor on hand. Makes the home made lines look OEM.