Interesting. I would like to see some measurements from them. The weight doesn't bode well though, you would think a active 5" woofer monitor would weigh more. It isn't exactly over-powered either. It looks more like the M-audio monitor designs than the Behringer. I would go with the Behringer, before I would give the monoprice a try, but I would still be interested in seeing some measurements to see if monoprice made a worthwhile speaker.
Another thing is, why do monitors make a point of shielding anymore? How many people are still using CRT Monitors?