I use roughly 300-500ml of old brown to 1.5 of solution using the Rollei/Maco developer. I think I use more than most folks, though. Regarding the exposure, it depends what you want. More exposure, less contrast. Less exposure, more contrast. I have zero experience with the new ilford paper, but Tim Rudman didn't seem enthused by it. Lastly, I think I am the one who said that formbrom (not necessarily 123), is hard to work with. From what I understand, the glossy paper (stuff I have) behaves differently that 123 (what Marianne is using). I just bought a pack of 123 and will be giving it a try because I also like the tones of Mariannes photographs.