I have a Fox RP23 air shock on my Orange 5 and I run it pretty soft as I HATE sticky shocks, not ideal as it can bottom out fairly easily but it's a compromise. Ideally I would like it to be a little more progressive so I can keep the small bump feel but have it ramp up towards the end so it's harder to bottom out. Coil shocks are waaaay better for sensitivity but obviously weigh more. you need to look at which is better for you, lighter and less sensitive, or heavier and more sensitive?
I have some Air sprung Fox forks up front too, they are the 36's so a little longer travel and they feel pretty good, they are pretty close to coil shocks sensitivity wise, but I can feel them spike on fast repeated hits. for all round use they are amazing, but for mostly DH stuff I would prefer coil sprung.