Which aid group to use?

There is a list of aid groups which are accepting donations for the victims; which is a good one to pick? Though, all of them are doing a job that helps humanity and I am not questioning their dedication or anything, but I do want to pick one where most of the money I donate goes to the victim and as less as possible towards the overheard or administration fees (though I understand this is getting into a catch-22), what do you think?