I'd had three previous cars with HID and the Bi-zenon option was amust in my shopping. If it didn't have them, I moved on to the next car.
All of my other HID cars were just HID on low beam and standard halogen high beams. WOW!!! What a difference with high beams also being HID!!
There are lots of rednecks in my area who just leave their damned trucks on high beam. They're sitting high enough that your high beams don't bother them, so screw you, they won't lower their beams even if you flash your high beams at them. The assheads lower them when I'm driving the box........