I have had very good luck with my Prusa i3 kit. Has an 8x8x8" build volume. I have been making parts for the last year and a half with good luck. Usable bike and car parts, an RC quad copter, and even some prototypes for the office at a fraction of the cost of commercial prints.
Once the unit is set up, fiddling is a minimum. These days i can CAD up a part, have it printing in minutes, and ignore it until its done.
Ive bought a second kit for parts and started building a bigger machine.
