If anyone is considering purchasing one, I STRONGLY recommend waiting until 9/26 when Formlabs is unveiling their system. Never been anything like it. http://www.formlabs.com/
I have a MakerBot and love their enthusiasm. Formlabs is barely a week away, let them roll out at their own pace. Look at my profile and believe me it'll be worth the wait.
It's a pretty neat device. I haven't seen any others that operate like the Formlabs device does (starting with a pool of liquid and hardening the desired part out of it). Is that a new development, or has the technique been around for a while?