I just bought the $600 ones from Umnitza...they are awesome...mine fogged up which supposedly NEVER happens to these and Matt (from Umnitza) has been there to help every step up the way...Matt at Umnitza is about as good a warranty as your gonna get in the aftermarket world.
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Clear Corners and Sidemarkers
ZKW Euro Ellipsoids w/ DDE Enhanced
Debaffled Airbox w/Green Drop-In High Performance Air Filter