Foma 100 is pretty nice stuff, if you ask me. I generally develop it in XTOL 1+2 for around 9 minutes at 68F (~ 6 minutes at 75), which tames the highlights well and allows me to get full box speed from the film most of the time. Agitation is continuous for the first 30 seconds, then for 5 seconds each 30 seconds for the remaining time. I find it's just fine for general picture taking in 35 mm formats when there's enough light, and when I don't plan to make large prints from the negatives. I've used Rodinal on this film a couple of times and have never been completely happy with the combination for a couple of reasons. First, shadow detail is a bit thin. If I bias my print toward shadow detail, then highlights are too bright. If I try to keep the highlights from blowing, then the shadows block up. Of course you can correct for some of this with judicious dodging and burning, but there's only so much you can do with those techniques before it becomes obvious that you have. Second, this is a very grainy film for something in that speed range today. Rodinal does nothing to ameliorate that, and XTOL helps quite a bit on both these counts. I also use it in medium format for portraiture under controlled lighting conditions using the same development techniques. Skin tones have never been a problem.