Hi Sarah,
Get a copy of this:
Make: Ultimate guide to 3D printing 2014
It was very helpful when we were determining what to buy and once your printer(s) arrive.
If you have any maker spaces near you, or other facilities that offer 3D printing, plan on doing some on site research.
We ended up purchasing 5 3D printers and a 3D scanner from MakerBot. If you have specific questions about those printers I'd be happy to answer off list.
Good luck,
Lauren Douglass
Head of Technology Services
East Lansing Public Library
East Lansing, MI 48823