I developed a roll of rpx 100 (35 mm) in Rodinal 1+50 , 18 min 20C°. http://www.flickr.com/photos/68952288@N06/8628057006/in/photostream/lightbox/ Relative low grain(rodinal ....) , wide latitude different gray scale, and different contrast.( fp4+ or others 100) It's too early to judge this film, but on internet pages there are a lot of legends : it's a kentmere ..... it' not like real apx .. .....eccc . I dont know ! i know only that is a cooperation with Harman with a new/different emulsion that replicate original apx. But this not the matter ... the real important question is : is rpx good for you? Have you try this film ?