Sheesh...this topic again??? Okay....
AIR!!!!!!
Better articulation on the rear-end with the air!!!! Far better ride offroad with the air. Nice to be able to inflate your own tires and not have to bum air from Steve everytime you head out to off-road.
And....the additional rear height comes in handy too!!!!!!!!! Cool noises to boot. The auto-leveling works a bit for offroading too. It is not a scam, sham or gimmick.
The only bummer is you potentially can drag-butt if your system goes out....such is the case when you add more electronics and features to anything.
I'll leave it at this: I wouldn't own an H2 without the air, but that's enitrely for offroading purposes!