The swivel feature for me is far more useful than any increase in light output. The ability to see into turns on dark suburban roads is just fantastic. It is something you don't appreciate 100% until you jump into a car which does not have the feature. The execution of this feature is perfect, and they work seamlessly.
They also look damn cool, especially during the day. I am sure the halogens are just fine, but the xenons just scream BMW.
2013 BMW 328i Sport - Back in the family!
2007 Honda Civic Si Sedan (Retired, Meh)
2005 Infiniti G35 Coupe 6MT (Retired, great car)
2002 325xi (Retired, very much missed)