Have just developed my first roll of Agfa APX 100 (35mm) - got a bunch on offer at Photographica show. Developed in R09/rodinal for 13 minutes @ 20c (rated at 100ASA). Results were slightly more grainy than I expected, but, based on other posts I have read since, this was probably about right for this film/developer combination. Also, by the end of development the temperature had risen to 21.5c which won't have helped, I guess.
Any recommendations on alternative developers for reduced grain? Thanks.