I tried cloth for about a month with my 1st DD. Her bottom stayed red and sore the whole time, even though I was changing them almost every time she was wet. Stayed with disposables after that and with my other 2 babies. I did use the cloth training pants w/extra padding in the middle, instead of Pull-ups, they also aid in training since the child can feel the wettness.
You could also do the math on homemade sanitary pads vs. disposable. Some women make them because of sensitivies. I'm glad I don't need to, don't think I'd want to wash that stuff out. Kinda gross, you know?!