I have 2, and '02 convertible, V6 auto. ....and.... '66 coupe V8 4-speed.
the '02 is a very comfortable commuter, but after 50 miles I start to feel the bigger bumps in the road.... and the 100% plastic interior rattles and squeaks, but I'm used to that.
Ride quality is better than my 280Z, which at 20 years older and the same mileage you would expect, but he Z ( stock springs, stock, new struts, 70R215 tires ) still handles much more precisely than the Mustang did new.
In 120,000 miles I have only had a few parts go out. Hard Parts ( '94-'04 are basically the same) are plentiful and cheap on eBay!!
One front wheel hub $45.
One Driver's door pull handle $29
EGR valve $45
3 sets of tires.
The '66 rides like a coal wagon, but acceleration is in the realm of a scalded hound dog. She was my DD for 15 years and we both have the scars to prove it. Now its a toy to cruise by Dairy Queen on Friday evenings.....