I'm not sure one air bag is significantly better than another brand. However, some kits will bolt in a little easier or with your other aftermarket equipment (5th wheel hitch).
I spent quite a bit of time researching brands, warranties, kits and compressors. Today I ordered Air lift's 5000 series ultimate (built in bump stops) and their wireless compressor set up. The internal bump stop allows you to run zero air pressure. Most air bags require at least 5psi to prevent damage to the air bags. I have heard that even wih only 5psi, air bags can give a harsher ride when running a truck empty.
Air lift will warranty their bags if you use their smart air compressor system as well.
Also, air lift has a $50 rebate on their bags and air compressors until 10/31.
I have a 2008 F250 CC 6.5' bed 4x4.
I'm not sure if this helps.
OJ