Thanks, everyone, for your thoughts. I'm keeping the Aritizia (have already worn it multiple times). But, alas, I think the white one is going back.
The style bothers me less than it might bother some because it's more of a functional jacket, IFKWIM. This is for walks in my neighbourhood, on the trails, etc. Not a "fashion" purchase so much as a "gear" purchase that I hope might have some crossover possibility in specific weather conditions.
I should probably have clarified on another point --- the white is not just for style. I live in a very dark neighbourhood, and I walk a lot at night. It is common for pedestrians here to get hit -- just the other afternoon, a high school student was critically injured at a crosswalk. I wear reflectors on my clothing when I walk (ugly, but functional) and often have a headlamp or flashlight, but a white coat would make me much more visible.
But I don't think this is "the one" and will wait a little longer to see if I can find what I'm after.
LaPed -- it's probably a similar warmth level to the Thermoball. The Thermoball is longer and more fitted, and does not have a dipped hem in the back -- is slightly more "coat" than "jacket" (unless they have changed the cut). The arms on the Thermoball have always been too long for me -- that is a feature Angie and Staysfit loved but didn't work as well for me, though I often just pushed them up and they would stay, which was kind of cool -- scrunched sleeves on a coat! Keep in mind my Thermoball is really old though, so the fabrication and style may have changed a bit in the intervening years.
The Tamburello is more "jacket" than "coat" so would not be quite as warm for that reason alone, but it does cover the bum (crucial for me). I think it would work for late fall and early spring temps back east in your climate, and would work well if you were layering for hikes, etc.
Carla, thanks. I think the LE would be too warm for what I want. I might be best in a kind of 3 in 1 coat with true waterproof on outside. What I sometimes do for these conditions is wear my little Botanie puffer as one layer and my Pendleton rain coat as the top layer. But I want something light (i.e. visible) vs. something so dark.