I have had both. My 03 and 05 had air ride. The compressor is nice however slow. Offroad I have broken 1 bag, had to cancel the rest of the trip and ride home with the hummer sitting on the axle. Really sucked. In my 07 I got the springs, no more worries of failure. However my trailer is really heavy tongue weight and the Hummer sagged bad when towing I had to ad air bags which I air up while towing and release to go offroading.
If you do a lot of offroading don't get the air, otherwise it is great.
Provide more additional suspension support for your front and rear suspensions. These Air Lift suspension kits are an excellent solution for the front P-30 motorhome suspensions!
Airlift Kit 1000 Coil (60000 & 80000 Series)
? Air adjustable air lift springs fit open coil springs on all vehicles, front or rear
? Up to 1000 lbs. of load leveling capability *
? The #1 choice for passenger car heavy load assist
? Excellent front end support for snow plows,
winches, etc.
? Replaces front OEM air springs on P30/3500 chassis