I'm not going to add anything new here, and I'm certainly going to be projecting myself into this, but I also see a Mustang at every intersection. And while I appreciate the low rumble of tasteful 5.0s, you do have to understand you'll be living with that every mile you drive it on the road (preferably straighter than better). At least the Z gets out of the way when I want it to.
I see many more Zs on the road this season, but I still get excited and try my best to give a wave or thumbs up when I can. And it's still far lower than any of its competitors except maybe EVOs or recent STIs.
Also, the Z attracts normal people. The modded Mustang is going to attract only sausage. That's just me.