Shoot some 17 rolls of 35mm film(APX, PanF+ and Fomapan) at box speed and I have Rodinal. Initial thoughts were to develop with Rodinal 1+100 stand, since I am not really sure about the exposure inside the cathedral. I am little too scared about the above scheme that it may destroy negs because of bromide drag. So, I am thinking about Diafine or Xtol My question is, What do I get from Diafine that I don't get from Xtol? Negs are intended to print on MCP 310.