I fitted a pair of these last year, I got them for £30 from a bike show. They look great on the car but they do not perform well. The dip beam is supposed to be flat but at the last MOT the tester was not impresed! The beams rose slightly to the right, he did pass them but it was a close call.
I very rarely drive in the dark but returning from a trip to Normandy meant an overnight drive home from Portsmouth. The dip beam is terrible, the original 7" sealed beams were better.
When funds allow I shall be replacing them with someting better. As always, you get what you pay for!