I've stopped using Pan F as I was getting patchy results. I tend to send them off for developing and sometimes they come back with all the vitality that you would expect but at other times they come back bad ('noisy', thin etc.). I am now using FP4 instead but would like to change back to Pan F if it is reliable enough.

Does anyone else have similar experiences or should I be asking more questions of the lab? They have said that this happens with (un?)reasonable frequency.