The M2 is a nice printer. The Zeus by AIO Robotics is pretty sweet too if you haven't seen it. Prints and scans and does both very well. Might take your capabilities up a notch. It's very new on the market so it will have some longevity and its very forward thinking. It does things other companies will be mimicking soon. You don't even need a computer to slice... it does it all. You can see it here...

http://makersome.com/store/zeus-3d-printer/