Air suspension, you will probably get different answers from different people.
My take : Mine has air ( It's rear end only btw.) Great for self levelling trailers etc, handles well - more comfortable.
When I did a long remote trip I was concerned about the air bags. ( Not sure why now, as most road trains run air bags ;) ) ...anyway, I bought rear springs - easy job to disable the compressor - pull out the air bags and bolt in the springs.
I am no wizard with a spanner it's easy and took me less than 2 hours to swap.
On return - I switched back to air, because it was simply more comfortable.
I've used mine in nearly all types of off-road situations with no air suspension dramas at all. I did have to replace 1 air-bag recently as it started to leak - the vehicle is 11 years old.
Others may not have had such an easy ride..... but it is a cheap simple thing to swap later, so I wouldn't be too concerned.
Cheers, Mark

