The more expensive HID kits will only last longer and are less likely to cause electrical issues. Glare from the bulbs will depend on the bulb type and positioning which will vary slightly by manufacturer. If you have excessive glare problems with your HID kit, you can purchase adapter plates such as the one in the link below so long as your specific HID bulbs are compatible with the adapter plate. There are more detailed pictures and information on the ebay page.
http://cgi.ebay.com/ebaymotors/ws/eBayI ... gory=36476
