Help me choose photo gallery plugin/script. . .

Hi, I’m sure there are like 20 of these a week, I’ve been reading through lots of threads and can’t seem to find what I’m looking for, so if someone can suggest something, that would be awesome.
I’m looking for a photo gallery script that lets you upload a photo through FTP into folders, and it creates the galleries based on what folder you put your pic into. It needs to allow for seperate galleries and it needs to make thumbnails that link to the larger picture.
I’d prefer a wordpress plugin that will just use my preexisting layout, however I can work with a script if there is one out there.
Thanks,
RDS