I rented an 2024 ecoboost convertible when I was away, Very nice capable car. Even without a roof it felt stiffer than a fox body or SN-95. Handled great, plenty of power.
Not a fan of the big screens on the dash.
I didn't like it more than the S550 I had (GT350) nor the S550 I have (GT500). Obviously not fair to compare the ecoboost to the high powered versions, but I'm speaking about the everyday aspects of the car, not tracking it or laying on the throttle.
I think the S550 looks better, a lttle more "mustang" to me.