Bought 2 100W Mono panels. They arrived quicker that published. Well packaged, very tough and secure. Plugged them in to my MPPT and they took right off. Early in morning ( 7:30), panels gave out 160W to start and went to 166W by 8:00am. Besides the product working great, it was very easy to get my questions answered by tech. dept. Back and forth e-mails were fast and to the point. I am still waiting for the competition to return my question about their panel. Too late, I have WindyNations now.