Ok... to clear up some misconceptions:
Any
Aftermarket housing for these cars are pretty bad. Cheaply made, poorly coated, ill fitting pieces of crap. The output is alright if you use HID.
That being said, the best solution is to do a retrofit job into the OEM housings by using HID projectors. Mkulrey, a vendor on the site sells them:
http://buyhids.com/retrofit_headlights.html
They're not cheap, but they are the best solution. Best fit, best cutoff, best projection...etc.