I've got a Mendel 2.0 I built, and parts to finish another one, plus one commercial MakerBot. All are in the 300x300x250mm print volume class.

Most useful stuff I've printed out are a sealing plug for my HVAC system, mandrel forms for a custom M10 magwell I'm working on, a spool holder mod for my Mendel and some SSD drive tray adapters for my MacPro boxes.