Best scanner for slides of music scores

Hi, I'm looking for some suggestions for a scanner that would provide the best possible reproductions of about 1,200 slides of music scores. These black and white scores/parts were photographed about 25 years ago and would need to be printed to approximately 11x17 paper. I would prefer to spend around $1,000 but could go higher. It sounds like sometimes it's better to go with software other than what is bundled with the scanner and I would be open to that option as well. Even though these slides would be printed black and white I would still prefer to get a color scanner so that it can be used for other things when I'm done with this project. I'm not interested in outsourcing this project as I don't want to chance the slides getting lost or accidentally ruined. Also, is scanning to pdf the best file type for this project? Any help would be greatly appreciated!