I think your part ex is brilliant and I can fully understand why. I drive my wife’s Hybrid Jazz more that her and booked a test drive in the new civic. There are many things about it that I loved, the drivetrain particularly, but my wife instantly did not like the ride, she could feel every bump , although we did have a Sport on test if that makes any difference.
It is of course much lower down, and a truly competent car, but when we got back in the Jazz, we both felt we preferred everything about it. Not felt like that about a new car before.
I’m sure you will love your new acquisition, good luck.