Until there is a tuner on the market that can adjust both the engine and transmission, or the power adder comes with a custom ecm/tcm, none of them are going to be as drivable as a factory vehicle. The '07-'11 models are a little better off, since the diablosport can adjust both the engine and trans. However, the '12-up models are screwed. I tried the sprintex SC on my '14, but got sick of the minor engine tuning issues and horrible acting transmission. Before you spend the money, drive someones jeep with the power adder you're looking at to make sure you can deal with the short-falls. If you had a manual transmission, it wouldn't be as risky. If I had it to do all over again, I would have saved my money for an engine swap.