I have 2 Airhawk pads, one for me, one for the wife. Used them for maybe 700 miles.
If I had it to do over again, I would not have bought them. I'm now going to spring for a full custom saddle. The Airhawks will probably stay on a shelf.
My biggest complaints, I've never heard mentioned. If I leave the pads on the bike on a warm 80+ degree day they get so freakin' hot it is like sitting on a frying pan. I'm telling you, I don't mind hot on a bike at all, but that black rubber gets smokin' hot and it takes a long time to cool down when riding.
Secondly, how much air pressure I use is real darn important. But I can't keep the pressure constant and who wants a seat that changes firmness? One time I rode from sea level to the top of the Sierras, about 8800 feet. The seat pad got harder and harder and harder. Sheesh. I let air out of the thing twice, and I should have let air out of it twice more. And guess what happens going back down to sea level? And if there's temp change and altitude change, forget it.
I had a nice custom seat on a former bike. Airhawks are a poor subsitute if you ask me, and way too expensive for what you get.
(I've been wanting to tell someone about my Airhawks... I feel better now

.)