I too swear by the Osram nightbreakers. However if the Cree spots i'm about to put on my Tracer do the biz then Obvs it makes sense to do the same to the Fazer too, esp as I use it for commuting, often late at night. Where / how have folks fitted them? (Yeah yeah, at the front, facing forward - I know... )
I made some short straight bars out of bicycle handle bars.
Tight up under the front of the fuel tank is a infill frame strengthening web it has holes drilled through it so I fixed my mounting bars through them.
I hammered a 10mm bolt up the end of my bars so that the head was about 30mm inside the mounting bar then shoved some tissue up against the the top of the bolt hard from the other end and filled the 30mm with Araldite, this firmly fixed the bolts into place, the bars were then mounted through the web infill in the frame, to bung the other end of the bars I purchase some cheap and cheerful handle bar weights than mounted my Cree LED to the bars.
Some guys have mounted their LED spots to the radiator, the only problem wit this is if the bike get knocked over or falls over it will shag the rad big time and if that happens 30 miles from home you have got a long push ahead of you.