I'll write my own reply - I decided to go for the Harmony/Destiny and found it to be a smooth, comfortable tire. Much quieter than the T/A and softer riding. I'd guess the sidewalls are much softer as the tire has "squishier" handling but not sloppy. Seems better in the wet. For an old, small minivan, it seems like a good compromise.
I liked the T/As when they were new, but they were a bit loud and wet and winter traction wasn't the greatest. I like the Michelin's better now. Hopefully they will perform well as they age too.