FYI I just developed and am currently scanning my first roll of Vision3 250D AHU (bought from Reflx lab in a roll of 36 as "320D AHU").
The only thing I changed from normal ECN-2 development was handling the remjet (or lack thereof). With the older 250D, I'd use Kodak's actual recipe for remjet removal bath as the first step, then rinse pretty thoroughly a few times until the water wasn't coming out gray anymore. Then after fixing, I'd unspool the film and gently rub off any remaining remjet with a gloved thumb in running warm water.
With this AHU stuff I just used a normal 2-minute presoak at temperature and developed per usual, also skipping the mechanical removal step after fixing. It looks exactly as good as the old stuff, and was simpler to process, which was my hope.
Anyone know where I can get more of this stuff? I don't care who is re-rolling it. Reflx lab appears to be out of stock. In the US but willing to ship from outside the country.