I've been using Arista Ultra 200 in 120 format for about 2 years now. I've developed in either Rodinal 1:50 or Kodak Xtol 1:1. I also rate at 1/2 box speed and have gotten pretty decent results. I can't speak for the 135mm but in 120 the negatives have a grayish/blue base which gives the appearance of low contrast but when scanned comes out equivalent to a grade 2 paper. When compared to my other favorite, Tmax 100, obviously, the Kodak product is superior. That being said, the Foma emulsions aren't bad and are pretty good when processed with care.