Quote Originally Posted by Deestone View Post
Anyone using keon sondra for their car's headlight? I heard it is really bright at night when you use it.
Keon Sondra uses Cree XHP chips. They are bright indeed but because of the way they're designed, they produce glare to oncoming traffic when used for lowbeams. The design of Cree chips is that they are places in a square-pattern with a silicone magnifying bubble on top of the chips which is used to focus the light of the chips on a single point on top of the bubble. This doesn't mimic the way a halogen filament lights up and thus will spread the light very differently.

Philips Ultinon LEDs, which I use by the way, are brighter than stock but a bit less bright than Cree LEDs, but are not glaring to oncoming traffic and have better light spread on the road. Think of it as having a halogen installed, only brighter and whiter. This is because Philips LEDs have their chips mimic how the halogen bulb's filament is placed inside the headlight.

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