According to Sylvania, they are their best upgrade (not including their HID's of course). Here's a search for bulbs for the 05 Focus:
http://www.sylvania.com Wrote:9007SU Silverstar ULTRA for Ultra Night Vision - The Whitest and Brightest Halogen
9007ST Silverstar High Performance Lighting: The Whiter and Brighter Halogen
9007XV XtraVision Halogen Upgrade: Up to 20% Brighter
9007CB Cool Blue Halogen Upgrade: White Hot; Super Cool; 100% Street Legal
'14 Escape 2.0t
2012 5dr Ti : Traded
2012 5dr Ti : Traded