Do you change the load rating of the truck with the new springs? My pet peeve with many long travel spring and shock packages is that they reduce the truck's carrying capacity too much.
from Carli's web page "The 5 leaf progressive add a pack rear springs remove the lower overload leaf and replaces it with 5 thinner gauge leafs - the same load capacity is maintained while increasing movement in the rear of the vehicle. Improved ride is achieved."
except the mini pacs for the 2nd gen dodges say 15% reduction in load carrying.
my understanding is the "improved ride" on road is simply a bonus, they are designed to make the truck ride better when moving quick in the desert, when cycling though the entire travel. For a dual sport that can still handle the weight in the back, you might need the air bags.
I'm at this point with my 97. i dont want the cheap $300 airbags to limit my travel, but i need them when towing. I cant afford $900 for LT airbags. i wonder how difficult it is to just remove the bags when i'm headed to the desert.