A few months ago I bought a used ACMC Tempering Machine for only $500. I like my Rev 2, which I paid almost as much for, but I needed a larger capacity.
I love my ACMC. It's not totally automatic but it's close enough.
There's an extra slot next to where the main thermometer goes and I slide in probe thermometer in to alert me when the chocolate reaches a certain temp. I hear they're super easy to fix. The only drawback is they use 100W light bulbs that are supposed to be discontinued due to some law. Companies like GE are now producing 95W light bulbs and I've read about people using ceramic heater bulbs.
I would love one of the bigger Chocovisions machines but it's 3x the price and they seem to have lots of issues. For the money, a used ACMC is the way to go. They're often on Ebay for around $500.