I've been wanting to hang my hosezilla air line reel on the ceiling of the garage for almost a year now. Things have come up and it just hasn't happened. I'm looking into options again for ways to run the air to it. I'd also like a couple drops over at the workbenches. The shop I used to work at had a very nice (very expensive) blue plastic system. Obviously they had a contractor install it but who knows where they got it from.

Common systems:

PVC: I see this as very dangerous, I know people still use it anyway. PVC is UV sensitive and I have quite a bit of natural light in my garage. Indirect as it may be I don't see it as worth the risk.

Copper: I've heard about 50/50 saying this is the way to go or it's dangerous from moisture collecting and freezing causing it to burst.

Black pipe: Easily the strongest of all of them but moisture will cause it to rust inside and possibly damage air tools.

Are the failures I've heard of just flukes, poor installation, or not properly maintained?

Any other options? What do you use?