I also went the ddm hid route. Much cheaper imo. I went with 35W slim & 5K for the low beams. I did have to put in the bulb out modules which negates the check lowbeam light error on start up.

Mister2 & twinspoppa - my question to you is, when you start the car up and immediately turn on the headlights, does the hid's come on... Reason being, for me, i would say that i have to wait like 15 secs or so to turn on the lights so that the check lowbeam light is not displayed and the xenons light up..

overall i think this is a good and economical product...