[knighty]

Aftermarket HID kits are generally lower quality to OEM quality kits, except lifetime of ballasts are not equal. Kit Ballasts can last anywhere from a few months to a year, OEM generally provides much longer life. Also, kits usually include generic bulbs, but the standard of the bulb is the same.. you'll get less light, more light, etc - what I am referring to as being BAD in these housings.. is it's ability to:

1) reduce glare
2) direct light
3) cost for what you get

With a halogen bulb, these will put out less light on the road and more light in other peoples eyes.