I'm interested in this as well, with Jobo development too.

Does the constant motion in the Jobo cause development-failure faster, due to more air contact?

btw denis, how much did you pay for your 5L kit? I've heard of people using developer one-shot(not sure as to 1st dev or color, or both), then re-using the P-B, Bleach, Fix and stabilizer/final wash just like c-41 for consistency.