I'm in the last stage of deciding whether or not to attempt a lemon law return of my Stinger. In my state, I met the requirements long ago, but loved the "idea" of the Stinger so much that I endured most of what was wrong in the hopes that it would get sorted eventually. Well, 3 sets of brakes, 2 LSDs later, and all of the other items (hatch rattle, radio fader, paint issues, etc.) I have determined that there is no way that I could own this car long term.
I came from a Lexus ISF and am strongly considering replacing the Stinger with a Lexus CPO RCF or GSF depending on how I feel about coupe/sedan at the time. They have a 7 year/unlimited mileage warranty (from in service date), a glorious V8 sound, rock solid dependability, luxury interiors, and they are also "GT" type cars. Aftermarket parts are also available if that is your thing. RR Racing makes a supercharger kit (670hp) that is phenomenal.