As for delta 3200'vs hp5 pushed, depends on what you like more. Do you want grain the size of Toledo, or do you want all the tonality of a chessboard? It's a trade off. For medium format mostly I'd go for the delta as the grain is acceptable and the shadow detail pleasing. If it were 35mm and the appropriate subject matter, I might push the hp5. I really don't like the look of 3200 film in 35mm except in limited circumstances.