The Rollei Retros are basically relabeled APX and they use the same developement.
The RPXs seem to need a slightly longer time, but I haven't tested enough to give exact numbers. They're not bad films, but nothing special either. I found the 100 (developed 13min in R09 1+40) to have really nice tones, mediocre grain and pretty low sharpness. The 400 is similar, but does hardly reach 400 ASA while having a little more contrast.
The RPX 100 was really nice in Caffenol-C-M, though... Rodinal/R09 is probably not the best choice for these two.