My best were in my 2019 Roush Supercharged GT. Beat many a supercar on the freeway. Lambo, Ferrari, Porsche GT2 (yes... THE GT2). The car ran 10.7's at 135mph when it wasn't broken.
Now that I drive a 3 cylinder GR Corolla? My favorite is any car that isn't expecting a Corolla to roll over...
Doesn't look like the USD to CAD exchange rate has changed much since you bought your Mach 1 but I'm assuming you all are suffering from the same inflation as the rest of us.
I don't think it's a Mustang thing. Cars are just ridiculously expensive.