I've been evaluating these for awhile and one thing that continues to surprise me is that they built them to the old mechanical aim (sealed beam) photometric requirements, rather than the newer (adopted 1998) visual/optical aim requirements which are higher/better. Technically these lamps cannot be visually or optically aimed by either the VOL or the VOR method, though practically it would be easier to do so than with a filament-type sealed beam. I'm also still trying to decide how I feel about the artifacts in the low beam patterns. High beam is great, nice and smooth, well developed, but the low beam light distributions still seem kind of blocky, made up of disjoint parts: here's the spread light...there's the hot spot...rather than a smoothly continuous beam pattern. Also, there's a weird "X"-shaped artifact in the middle of the low beam hot spot that is prominently visible while driving around. I'm still waiting to see if I'll get used to it and stop noticing it, but so far I still notice it.