Read what Patrick Robert James says above and DON'T take it with a grain of salt or silver. What he says is exactly what I have found to be true through my own experience. A while back I was traveling with my wife and came upon a parked/displayed steam locomotive engine. It was the old 1223 from the Pere Marquette line and it was parked in Grand Haven, Mi.. I had two of my favorite cameras along, plus my super heavy duty Bogen tripod. I setup for the shot and used both cameras from the same location. Everything was exactly the same except for one thing and that was the film. The Kodak Monitor had HP5+ and the Zeiss Super Ikonta C had FP4+. I processed the film in Xtol Replenished and did everything exactly the same. I set my D2 enlarger with my very good Vivitar 100mm VHE lens for a print size close to 20X24 and used a sheet of Ilford Multigade 11X14 for a tight crop of the front of the locomotive. When I wet printed the two best shots from each camera I was really surprised as to which one really stood out as the best of the two. I thought it might be just me, but I quizzed several family members and they all said the same. Yup, that HP5+ shot was the one that caught everybody's eye as to being a better print. Now you might say it's because I used different cameras, but I know for a fact that the Zeiss lens I used with FP4+ is actually a tad better in the sharpness department so that's not the difference. I also shot them both at between f8-11 , which is good for each in the sharpness/DOF area. The FP4+ print up close didn't look un-sharp, but didn't seem to have that micro contrast/micro detail look to it. I was a little stumped and curious at the same time. What was the reason I wondered? It has to be the grain in the image itself causing the difference of apparent sharpness. Could I see the grain in the HP5+ print? Even in a section of clear whitish sky I could see no apparent grain up close, but still there seemed to be more detail in what few clouds were there. I guess it makes sense, but from a guy that always believed slower was better, it's a hard pill to swallow. This was from 2 1/4 X 3 1/4 negatives so 35mm might be a hole different ballgame.