So it sounds like air does ride better, cool. I'm pretty convinced.
I am looking at air over leaf, but the problem seems to be the leafs are custom and therefore $$$, might end up even being cheaper to build a 4 link. It all depends on the cost of the rod ends I guess.
I have seen hemi43 web site, very nice buildup, but I did forget he had air ride...
I'm not at all concerned about bags breaking, leafs break too.