removing brake line fittings

If I'm replacing the line anyways I'll cut it and use a 6 point socket. If trying to save I'll clean around threads and soak w pb blaster, then a day or so later put the flare wrench to it. If it breaks free, I work it back and forth the whole way out. Real stubborn lines I have put a little heat to them. Rolls of line are cheap, more often than not I just cut them use the 6 point socket and bend up a new one. Keep in mind, I'm in Maine where most brake lines are rusty anyways. Can replace quicker than spending a day trying to break it free.