I've used Foma 200 in 4X5 for many years with good results, just bought a box of Foma 400 in 4X5 thinking I was going to get 400, sadly I neglected to review the data sheet, only a few developer get close to 400, none of which I use,, most seem to land around 200 which I get with Foma 200 in MCM 100. Although Foma 400 seems to be less contrasty than 200 it is rather gainey, in 35mm I have live with the grain of 200 with a little more speed than 100. What I don't care for with Ultrafine is the absence of the anti halogen layer, so for a walk around film I can live with Foma 200. By the way when I did shoot Foma 100 I got ISO 50 with D76.