[HO455]

I don't know about the EZ Ride system you refer to (Can you post a part number?) But I have a basic manual valve system in my Burban. It was poorly installed when I bought it and it has been a reoccurring source of irritation and drain on my time since I decide to keep it. I have poured a bunch of time and money into bringing the set up up to standard. I can only count a couple of months that leaks were not a problem. By leaks I mean I should be able to let the truck sit 12 hours without losing pressure in the tank or a bag. (As a side note after more than 15 years as a tug boat mechanic I am quite familiar with air controls)
Ride quality can be good but as little as 5 PSI can be the difference in good and poor. So proper engineering during the installation will help but it is likely you will have to take and modify the bag mounts to dial In the ride height/ quality after it is on the road.
Alignment isn't a big deal but remember when you deviate from the ride height you use when you do the alignment it will affect the toe in setting. Deviate to far and bump steer and be an issue. In more than 13000 miles since I put it on the road I have seen no measurable front tire wear, but for some reason the rears are wearing much faster.
As far as bang for the buck and ease of maintenance static suspension wins every time. Prior to purchasing my Burban I had no interest in air bags, but I was willing to give them a try after getting the truck. In hindsight I would have been better off to go static. Not having a need to "lay frame" the only benefit in my world is when I load it up with plywood or a couple of engine blocks I can level the truck out.
If you are interested in the work I did on my daily driver Burban click the WMB link below.
I hope my opinion helps you make an informed decision.