I have 8k HID's in my 280Z. And yes, the light does spred lol. But you can still see 100% better then with halogen bulbs and it looks very cool.
And you need to adjust them so they point towards the road... I mean, all the way lol. Cuz I used to get flashed but not anymore. And im getting my "smoked" covers installed as I type this, so that should tone it down like andrew said.
Overall, its a must buy and you wont be disappointed.
-Dylan
http://www.youtube.com/user/tricofilms