I got a look at the Cube printer recently and wasn't really impressed. Their target market is kids, and so the whole system from printer to the software used to run it is dumbed down and not at all customizable. The print quality was not great either.
For a printer in this home user/hobbyist class, I think most people would be better off with a Makerbot, or if you want to build it yourself for a cheaper price, look at a Reprap. If you want to see other options, here's a huge list of them: 3D printers under $1000.
These little printers can't really be compared to the commercial ones like Z-corp and the ones used by Shapeways and other 3D print services. The commercial printers often cost upwards of 100K, and have much bigger build space, better resolution, and better quality in general. The home printers are good for getting quick results for concept testing and for simple low resolution functioning parts.