I went ahead and put on the Vigor air shocks. Been on about 3 weeks now. So far so good. I put on a Dorman air compressor. Not much difference in money here especially considering it comes with the intake hose/filter, pressure sensor and the warranty.
I liked the shocks taking them out of the box. The electrical and air fittings are in the same position as the originals. So, no messing with a replacement hose to reach the air fittings like in some shocks I have seen.
I have not even heard the compressor turn on when I start it up in the morning. I was a little concerned, but hooking up my Tech 2 it shows 54 PSI and the position sensors are not calling for compressor. That indicates to me no leaks. I can turn on the compressor with the Tech 2 and watch the car raise, turn it off and it lowers until the position sensors are happy.
Time will tell and I will let the group know if I run into issues.
I use GM parts on items that will leave me walking. Air shocks to me are not such an item. And I have an extra hundred bucks. At least right now.