Gold-Line Performance Springs

i was thinking about getting these but couldn't find much info on them... anyone?

I do know a guy on our 3rd gen board that has them. So far he likes them. But who know about the future, will they sag or have other quality problems, who knows. You'll have to ask your self if saving a couple of dollars is worth not knowing. Surely their must be a major name brand that doesn't cost much more.