Dedicated LED headlamps designed for the light source and using accurate projector optics for dipped beam at least, are the way to go.
I would question your need for the electrical complexity of a relay for the headlamp circuit Robbie, given the substantially lower current draw of the LED light source. Generally with electrics KISS rules.
You have definately got a point, I have already thought about it. I think I will start with the Cibies. Another matter is wether it is really needed. With the bright nordic nights I seldom use more than DRLs, exept in tunnels. How good is good enough.....