I just installed a 100W kit.
And I must say that it is much brighter than the original light. Much easier driving at night. And surprisingly, i did not bother anyone around.
I did notice however that there was a faint glare coming out of the front, could be because the bulb may be a bit longer.
For now my install is just a slapup job that i am running off an external battery in the tank bag.
Its a pity there isnt anyone around with whom i can compare this with.