I got a response back from Solidoodle- here it is:
With prices ranging from $499 to $799, and up to 512 cubic inches in building space on the new Solidoodle 3 model, we provide some of the best value in the consumer 3D printer market. I can't speak much on the other companies you mentioned, but I can tell you that with Solidoodle machines are pretty solid--you can even stand on top of them (though we don't recommend it, of course). They were designed by an aerospace engineer and it shows. You can read our product specs at store.solidoodle.com.
I hope this helps. Good luck on making your decision.
The quickness of response is a plus!