I have the Motolights on my I/S. Got them at Inzane a few years ago. They are pricey.
We've put Kuryakyn bullet lights on my M109R, on a friend's HD, and on Wizard's Valk. Mounted them onto the engine guards on all 3. Wizard's are mounted at the top of the guards, and have dramatically improved his view at night. And when he's riding behind me at night, his bike is very noticeable - looks kinda like a train coming down the road.
They're a less expensive option if needed.

