When I bought my '03 KLR i was very unhappy with the headlight brightness, so much so that I was very uncomfortable being out after dark on my bike.
This spring, I installed a BL-43C130 (the clear model) and I'm very, very happy with the brightness output. I can see well at night now, and on high beam it really provides all the headlight a guy could ask for!
So, if you're looking for a headlight to improve visibility, I'd definitely recommend it.