For what its worth
I changed all the halogens on the front up to those Philips 50% plus units made the lights certainly brighter with minimal effort.
I was thinking along the HID path as a upgrade too
really like to hear from anyone who has any exp. with the upgrade on a P38
The Lightforces seem really good and if i were to go with a "extra set" for the extra cst i would choose them
What i was thinking about for the main beam this winter is uprating the main beams to 130w bulbs ( al little naughty) but can be removed for inspection
PS wills - that a good link on HID`s & for other stuff too