I've bought several makes of panels
from them. I have no reservation about them as a company and will continue to purchase
from them. For the panels, SB seems to be dealing in whatever brand of Chinese, Korean, etc panels that brings the price
down to attractive levels. They worked through the whole embargo thing intent on bringing the costs down. All the brands seem to be equal in build quality and SB is very good about customer support. They get well below $1/watt and I've yet to see any that I didn't think would hold up.