Sorry to ask here, but I can't go to their forums and get an unbiased answer.
What makes you think you'll get one here? Or, even an informed one?
I have a netduino. When I have issues to talk about with it, I go to the netduino forum, not the Arduino forum.
It seems to me more likely that if you ask questions on a forum that is related to one of the devices you are considering that you'd get better answers than on a forum that is NOT related to either of the devices.
Kind of like asking on a Chevy forum if you should get a Honda or a Toyota. Of course, the answer is no.