Chocolate chip muffins

I made muffins again, mostly following this recipe, except using chocolate chips instead of blueberries. I used 1 cup of whole wheat pastry flour and 1/2 cup white flour instead of the 1.5 cups white flour. I think it made a difference - it's better than having all of the flour be whole wheat. Also I'm not sure if the fact that it was whole wheat pastry flour made a difference, as opposed to regular whole wheat flour. I again used cracked wheat instead of wheat germ, which adds a crunchy texture. I'm not sure if I like that or not, but regardless I will continue looking around at random healthy ingredients I can throw in muffins. Overall I liked these muffins.