I've got our new M12 racks from Nitto. The old version was customized for us to place a threaded light mount on the right side support stay. This new version has a second light mount on the left support stay. So, if your looking for a clean way to mount two headlights nice and low, this is it!
Since the support stays are not adjustable, I'm often asked if these racks will fit a specific fork. My experience shows that the lower stays are flexible enough to fit most fork widths and crown heights. I haven't found a cantilever-equipped fork that didn't fit, yet. So, unless you have something really unusual, it should fit.
Price: still a low, low $50!