zsas, yes, the two photos I provided the link to on another thread were taken using Ultrafine Xtreme 100, bulk loaded, and my Konica III camera, developed as I indicated.
I have also tried the 400 and like it too and I've picked up a 100 ft. roll. That I develop with D76 stock at 68F for 7 minutes, agitating 4 times over the first 10 seconds and repeat every minute. It has a different, thinner base that curls more compared to the 100 so it is probably not from the same supplier.
The Xtreme 400 in 120 is also good in my opinion.
I would suggest picking up a couple of rolls from Ultrafine to try them to see if you like them; they sell individual rolls besides the 100 ft. bulk rolls.