I just installed (today) a set of Rigid D-Series fog lights in my 09 F150 (DOT legal fogs) . And just got back from a test drive.
They are quite well made, and have a perfect beam pattern. They claim to be 1750 raw lumens each. Clearly, they are brighter than my low beams, and have a much wider pattern. But, due to the awesome cutoff, they don't bother oncoming drivers.
In any case, I'm not one of those guys who claim "purchase what I did, it's great". The one's I purchased are Fog lights, and they are the best fog's I've ever had. Better even than the PIAA's they replaced.
Happy with the quality and the light.