Recent versions look very promising. Im considering getting universal pillows which raises the coilover springs for when I go over rough or bumpy ground for better clearance.
Any thoughts or recomendations which works with bc's?

im pretty sure air cup's are fairly universal

^Yup.

There are a bunch of guys here that have them and LOVE them.

The only issue is that they are for slow speeds only. I guess they are much more fragile than standard air ride, so any "at-speed" road shock input will quickly degrade the life of the bags themselves. A big enough jolt could pop a bag the first time out, then you're out 1500 or whatever they are....