I wear mostly black coats, long, oversized and wool. My favourite is a very old Lemaire/Uniqlo collab one
I have that Jill Sander long puffer coat too, and I did wear it quite often last year, but I'm not really a puffer coat fan - don't like the noise it makes (if that makes sense). It was useful for queuing outside supermarkets though!
I was thinking about getting one of the wool plus J coats this year - but I'm not sure about the belts - they seem quite fussy and the price is a bit mad for Uniqlo. I have just ordered the Theory/uniqlo collab wool coat and might still order a Jill Sander one to compare before deciding