Bumping thread with some comparison pictures. I've had the Osram H9s for just over a year and a half, and the driver side blew out tonight. Luckily, I had an Osram H11 Nightbreaker as a spare. So I have comparison pics!
Nightbreaker on left, H9 on right
You can see how brightness is more or less the same between the two. But of course the Nightbreaker is whiter.