From my few experiences with Kari, what really makes his watches special is HIM. It's his persona that shines through from the first moment one meets him to the finished product.
That's what I consider magical about these pieces, is that this terrific guy and his team are putting these out there.
In terms of finishing, there's a different aesthetic present in the Kari which is not in the Dufour. The latter has a more rooted aesthetic on Brassus models of the 1920s-1930s. If you look at some of the AP and Patek movements from those two decades and look into how the finishing is done and the type of jewel shapes used by Dufour you'll see how much of a link with that tradition he's doing.
Kari on the other hand, inserts his style from a different point of origin (of course his relationship with the tradition is very different than Dufour), but I equate his finishing more with the highest of the 1950-1960s. A time when machinery was used more than in the 20-30s, and an altogether different result, still absolutely amazing though in it's own right.
Thank you for sharing these amazing photos, I'm alway hoping that when I click on the AHCI link I'll find more pictures of these two masters, they're such a beautiful antidote to the Renaud et Papi style that has become the mainsteam nowadays (which I love as well, but a different beast altogether!).
Thanks
S