I've played with pretty much any film I come across, and in terms of cost-benefit I've settled on Fomapan films. I like the grain structure, they are some of the cheapest BW film available and have great latitude if you like to mess with stand development. I shot this photo on a Pentax ME camera using Fomapan 100. Developed at home with Ilfotec DDX and scanned with a Canon 5D Mk3 + Canon 100mm f2.8.
FP4 is beautiful, I shoot Fomapan for price, but FPR is amazing. I don't shoot a lot of very long exposures so didn't know about those issues with Fomapan, a shame. So what you're saying is, it is not consistent with long exposures? Like, several long exposures that are exactly the same result in different film reactions?