i just started developing my own b&w film and i use ilford's rapid fixer. man, does that stuff stink! i am now looking to buying some odorless rapid fixer like arista's but i was wondering if the change in fixer would affect the quality of the film in any way? are (nonhardening) fixers pretty much generic and therefore there aren't really any noticeable differences between them? i am shooting hp4 plus 120 film. thanks!