While DD-X has been formulated more specifically for the T grain films, it is a great universal developer, particularly good for extracting film speed. As in every case there are things to remember: 1+4 will give less grain and less compensating development,, and slightly less sharpness while 1+9 will do the opposite. I find DD-X to be similar to Xtol in terms of effects, but it is easier to handle because it's a liquid.