I think that is good to donate to both. Many people are using some help of MDA for equipment , most of us used, or will use standard $2000 /per 3 years of help towards orthotics or scooter/wheelchair.We all are using MDA clinics, Some of MDA clinics are better some worse, but they exist and they are good at least in time of diagnosis and in time of more advanced needs .MDA have equipment loan closet. PPMD is fighting for research and cure . MDA is helping for every day ( and they do things for research too) We do not know from where our cure would came; PPMD? MDA? Charlies Fund?All together ?We parents of kids with deletions and duplications can't predict what would be a true cure and when. So I would keep all sources" active."many research is paid by both PPMD and MDA.