I ride a number of Brooks saddles, and I would say that perhaps more than a non "shape changing slightly over time" seat, small changes in seat position make a real difference.
Generally they all work best for me level (ish) but I can say that I appreciate the one bike I have that has a micro adjust seat post, as its easier to make a small level change.

re width, as a slight guy, I find both my regular width B17's (two of the, with slightly diff widths actually) to be perfect feeling, my sprung B17 to be slightly less comfortable but I think thats because I dont ride it enough and it hasnt taken shape to me as much as the others, and finally my C17 to be good shape wise, but not quite as comfortable as the leather ones.

so no real clear answer, which is no surprise really.

ps, nice overlays btw