Well...when I was big into detailing, I had my GTO and GXP but since those are gone, and I sold my truck recently, I bought something that was very good on gas, fun to drive, and something that I could still mod.
The Black 2016 Jetta Sport 1.8T. I know, nothing like the GTO or GXP, but I hope to be back into an LS or LT car soon...