Wireless air bag controls - reliable?

I have the Air Lift 72000 Wireless Air on my truck. First year the "manifold" that regulates pressure to the bags died but was replaced painlessly under warranty. Two years later I thought it died again, but this time it was the on board compressor. Replaced that and still going strong. One reason I like it is I prefer to inflate the bags until the springs just lift off the overloads, then let air out until the overloads are just engaged. That way you're making the most of both steel and air in your suspension. Easy to do while standing at the wheel, not so much when you've got to keep going back to the cab to change pressure. Of course, if you have someone that can sit in the cab while you stand at the wheel and give instructions...