the smiley ones are euro spec. They have a different light pattern.
The projectors without the smilies are the U.S. spec projectors. They meet DOT requirements and have a different pattern than the euro spec projectors.
The euro spec projectors toss light up and to the right...so the light pattern looks like this... __/ __/ The u.s. spec ones are just straight, and throw extra light up I believe
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the euro spec lights also use h1 bulbs and the us spec ones use 9006 bulbs.