I've been developing for a while and have so far only used rodinal. I have only been pleased when using slow films (100 asa) but never really liked the grain, contrast and lack of sharpness i get when i'm developing higher speed films (mostly 400 asa). I definitely want to try different dilutions (i've mostly used it at 1+25) and less inversions/agitations (stand at 1+100?) but i would also love to try some other developers. Ilfotec DD-X, T-Max and Ultrafin Plus have all caught my eye, being simple in use and rather inexpensive. I also saw more than a few good results other people obtained. What are you experiences with these developers? Any other suggestions? HC-110 perhaps? Thanks very much for any sort of inputs!