Wow! If you guys haven't seen this printer take a look. As far as I'm concerned, Brook Drumm just hit one out of the park. Got one as a kit on Monday and the prints look better than anything I've gotten from my previous three printers. It is extremely stable and the automatic bed leveling works great. The probe is an inductive type that senses the aluminum print bed. It senses the bed about 3-4mm above it and is offset from the hot-end by about 1mm. All you have to do is figure out the offset and you are good to go. All this for $539 from Amazon Prime. You can also get one already build for $599. I'm just blown away!

http://printrbot.com/shop/simple-black-kit/