I just tried the new Delta 400 per Scott Eatons reccomendation on photonet and I am very impressed with the results using Microdol-X. However, in S. Anchells cookbook he states that higher dilutions (like 1:3)? of Microdol-X can give an increase in film speed. I tried some old HP-5 I had at an IE of 400 at the 1:3 dilution and the negs are very nice but a bit flat. I had never really had gotten good results before using HP-5 film but will now experiment with it again using Microdol-X. The one roll of new Delta 400 at 320IE and at 1:1 dilution (using the Massive Dev list time) came out really, really nice, maybe a bit contrasty for my taste but I will have to see how they print. Anyone tried the new Delta 400 at higher dilutions of Microdol-X ? I'm going to try this this weekend but thought I'd ask here for any opinions. thanks.