In terms of cutout, aftermarket LED perform relatively better in projector based headlamps compared to reflector based headlamps. Its much harder to achieve a good cutout in reflector headlamps due to every LED having different placement (distance) of individual LED diodes. In projector based headlamps, because LED sits behind projector (and not directly in reflector housing), a badly placed LED will perform not too bad due to projector in front of it.