A JTEC. I've done "this" for over a decade, true familiarity with a platform requires tuning 50, and you aren't a master until closer to 500. I have a good grasp of 96 and 97, a good feel for the rest of JTEC, with two bricked JTEC+ on my bench.

I may tune enough to cover my investement in gear, but at this point it's all my stubbornness and trying to rationalize why I need another fuel hog Cherokee, that keeps me going.