One of the 3D printers we demo is a Afinia H800. It has a single print head (meaning only one color at a time, however you can change colors mid print) and is an extrusion-based printer. It is able to print ABS and PLA and has a heated print bed to help the plastic adhere and cool properly. It is not as flexible as other printers, and the software is very basic, but it is very easy to learn and maintain and it prints flawlessly. Another benefit of this model is the fact that is completely closes up (and has HEPA filtration!), and self levels. This makes it very easy to move around without worrying about damaging it or having prints fail.
Buy here for $1900