POR 15, any expierenced users?

I agree for control arms.
Powdercoat "is" a great solution in a lot of instances. The prep also needs to be perfect and the customer needs to understand that repair to a powdercoat finish in near impossible. In most cases system failure requires a complete redo. A lot of people think powdercoat is the end all do all. Just be aware. It has some short comings.

True repair, agreed.

black powder coat can be easily touched up on unimportant or not center of attention parts. NOthing is more durable though.