Actually I've run multiple polls and people like signature solar more than sol ark and many other distributors of these Chinese solar products. SS does more volume than the others though, and they come to the forum. So I'm expecting around 10X complaints than the others.
Many of the other distributors don't sell enough to even see the defective cases. Or they may have one every few months. Depends on distributor of course, but signature solar makes most of their customers happy. Not the defective unit ones. Like my megarevo units that had multiple