When I went to install my brand new buttbuffer for my girlfriend's seat, I realized that I've been using the badass seat cushion without the insert for a while, mostly to prevent "swamp-a$$". My only complaints about the badass so far is that the front strap wasn't long enough, had to use a velcro extension, the creases that are developing will surely get annoying and lead to wear, and when you leave it out and it gets rained on, it stays wet and will soak your butt, especially near the crotch.
We did about an hour on the ButtBuffer, and the girlfriend likes it a lot. She did not like the BadAss. Time will tell if it creases or has other issues.
I will probably buy an AirHawk to try it out.
Pics: Badass in front (currently unattached so you can see extender), approx 2 months / 2,000 miles on it. ButtBuffer in back, 1 hour on it.