It's the cheap option but they aren't too bad and with proper angling they really light things up. I'm much more comfortable driving back roads at night now that I can spot Bambi.
Optronics Platinum Burners Series. Cheesy name but whatever. 3.5 inch round 55W each. Item model # QH-85CD. Found with the other vehicle accessory lights in the automotive section. Interestingly this particular Walmart was also stocking Hella lights.
Webbikeworld review of their predecessor here: