Thank you everyone for your continued discussion of this topic. It's very useful.
On a side note, the Fuji GF670 (and no doubt its bessa equivalent) has proved quite nice in use. It has an interesting lens with quite a distinctive rendering: sharp, contrasty, and saturated. I've included three images if anyone is interested:
On Tri-X 400:
On Ilford Delta 3200:
On Portra 160:
On Fomapan 400 with a yellow filter: