Which bulb did you end up installing then? I bought the Phillips H11 VisionPlus from Amazon for $11/bulb. Claims to be 60% brighter than standard halogen. I found this thread which has quite a few good tips for replacing the bulbs, http://fordcmaxhybridforum.com/topic/814-replacing-headlight-bulbs/?do=findComment&comment=4921. It looks like you can just loosen screws and slide the assembly forward to give you enough access to take out old and install new. Post #10 in that link said: "just replaced mine and took about 5 minutes, the driver's side i did remove the 2 torx screws and the assembly moved about an inch forward- that give me enough space to replace the light. on the passenger side, it took about a minute." Or if you want to remove the assembly someone mentioned this tip (post #11): "One little helpful bit: there's two painted 10mm bolts that hold the side body panel in place, near the hood hinge. If you remove those bolts, you can flex the body panel just a little bit outward, and the back part of the light assembly will come out and up."