I have only installed Sumo Springs on the back and my 23TR drives great. For me I see no reason for expensive upgrades for marginal results. Now when it is time to change the shocks I will probably upgrade at that point depending what the forum chatter is. The Sumos did raise the back about 1/2 inch which is insignificant.
2017 Gemini 23TR Ford chassis w/ power stroke 3.2
DW, Daughter and 2 dogs, Sofie (black lab/boxer) and Phoebe (schnoodle)