Autozone is also carrying the copper/nickel line. I picked up some a while back to redo some fuel lines, great stuff. If I ever have to redo any brake lines on my own vehicles, that's what I'm going to use (unfortunately, my customers will balk at the extra cost).
Just a note on Deve's suggestion on using a funnel to fill the master cylinder; Make sure you use a dedicated funnel for that. Only use it for whichever type of brake fluid you prefer, don't use it for anything else. That will eliminate any contamination issues.

Bill Burmeister