Bit off the original topic, but which one of the 3 chromogenic black and white fims is the original? I assume not XP2 as Ilford has no other C41 films I know of, so I'm guessing the Kodak BW400CN. I did quite like the Fuji Neopan400CN but it's harder to find and I seem to remember rather higher priced. The other two can often be got from Boots on a BOGOHP offer.