I'm simply curious on your experiences with RPX400. I've tried it at ISO200 (after determing my effective film speed) in HC110 dil. B, but it was lacking midtone contrast (maybe I incorrectly performed my effective film speed test) while the negatives exposed after ISO320 does look a lot better in midtone contrast. I usually scan my negatives, but sometimes I find the time for some proper darkroom printing. Haven't printed any RPX400 yet but any day now... Your impressions? Has anyone tried it in R09? Or the special purpose RPX-D developer?