I have also considered for years buying the euro style headlight housings. I like how they look but I question if they'd work any better than the factory fluted design. Right now I'm up in the air over whether to replace my dull headlights with new oem or euro-style diamond cut lights. And yes I've tried buffing my lenses, it helps but when the refelctor surface inside gets old and dull theres nothing you can do.
So if anyones got the euro lights and has an opinion, love to hear it. I found some for under $100 on the bay, includes parking and markers. I like the look of the clear front markers on a black truck. But I wont do something just for looks, its gotta have a functional advantage also. I'm funny that way.