I've bought both the coated and the copper-nickel brake line. The coated was a waste because it wore off where it was flared and any where that it was strapped to the car. I drive beaters all the time, so they always come to me with lines that look like they're going to explode if you even look at them the wrong way

I had a '92 Buick with a rusted out frame near the back door/trunk area, so the car would flex bouncing down the highway... I ended up putting loops in my brake lines right there so they were free to move with the car.
