I'd go B6 rather than D1 simply because you can put your hands in the pockets more comfortably than the zipper pockets on a D1. My favourite though is the ANJ4, I have an eastman but it does suffer from flaking of the surface finish which seems usual for older Eastman jackets. Again this is over 10 years old, been worn a lot but does not have an original 'look' to the finish.