I have used many types of headlights in my Arntz Cobra over 20 years of driving and running rallys. My home made versions are the best, with a Nissan Murano HID assembly mounted inside a new 7" unit.
The Hella's have very good beam pattern with Halogen bulbs (Not so good with HID's). I have a set that I used for about a year and lots of brand new bulbs. If I can help anyone with anything, write me.
I may not respond before next week because I'm getting ready to run ta rally to Las Vegas:
http://carzero.freeservers.com/
RallySnake