Well, my first few photos with APX 100 turned out well -- I developed in fresh Edwal 10, 9 minutes, agitate every 30 sec, 70.5 degrees. It did seem to hold values well, not blowing out some strong highlights, with a range of midtones different from my usual developer, if with a bit more grain. I think I'd like to use this as a replenished developer, which I've found has some attributes -- especially given its longevity.

Picture taken with a Konica IIIa -- nice lens.