IMHO bags are very reliable when used as originally designed in a suspension that can still function if the bag blows. Example being semi tractors & trailers but they are sprung using bags as an additional. Ford did bags on some of their cars but when the compressor went out (pretty common on those old Fords) the vehicle sat low but was still driveable.

I would bag my truck IF it could be set up like the old Lincolns that when they failed the vehicle was still driveable. I would hate to be stranded all because I didn't have that one piece that would fix it in the truck with me. Being able to drive it into the next town or home and dealing with it then would be nice. I have no complaints out of my coil springs. A friend of mine with a Lincoln said once I go air I would never go back to springs.

What would you recommend that would fit my situation? I have a '05 Crown Vic IFS & a MN12 IRS out of a '95 TBird.