Why don't you check on your truck, I though you had a 24's with kind of corrosion on your dual valve live shocks ? Are you ok man ???Is dual live valve just rear or front too?
To me, it's more marketing than other , as said @Oldfart
The huge improvement was between gen2 et 3 with the 4/5 links rear spring system , I suppose no one gen3 owner regrets leaf ???