Originally Posted by Sudesh

Also people with OEM xenons should remember that the OEM system have self levelling adjustment. So when moving to an aftermarket system this feature will also be lost. [unless you go to the effort moving the levelling from the OEM headlight to the aftermarket one]

In my opinion, there is NO WAY, I would change out the OEM Xenon head lights for the cheaper versions no matter how good they good.

The only was I would even consider this is, if there was an aftermarket set of Xenon head lights with OEM quality and all the OEM features so it was just a simple plug and play application.