I've developed my first roll of RPX400 (120) this evening using Barry Thornton Two Bath developer (my standard soup).
I'll give feedback as soon as I have digitized the negatives.
As promised in the previous post: some results of my first roll of RPX400.
BTTB developer did a nice job. Grain is a little bit smaller than expected. I will definitely keep this film in my toolbox.
All shots taken with a Bronica SQ (Zenzanon-S 150mm F3.5, wide open)