Well here I go. In my opinion, for what it's worth, the stock lines are very good and I didn't feel any difference after changing to stainless lines. However, because of the high level of danger in what I do it was necessary to use them. Rocks have caused breaks in non stainless lines on track cars and I've personally seen serious accidents from brake failure. One time it was installation error but the result was a totaled car. From what I've seen the difference in low and high quality stainless lines is where the lines meet the end fittings. That's where the cheapos fail. This is the first I've heard of Magum brakes.

Les