Took the Omega for its MOT test and it failed on headlight aim (HID) - N/S too low and too far to the right. It was a Depo? unit and no matter what I did, it just stayed too low. Changed it for a spare second hand Hella unit which I'd bought last year, plugged it in and hey presto all sorted. Took it back and got my certificate.
Moral of this story is that not everything that glistens is gold... Depo looked nice out of the box (and on the car), but just didn't seem compatible with the control equipment / motor from the original unit.