If you think that the LED will be better than a xenon then the difference is very very small. I am comparing the 9th gen Accord models with updated morimoto's.
Also of you compare Audi xenon vs morimoto's in the 9th gen Accord moat people would say the morimoto's are brighter. Most people on Audiworld forum agree that the LED headlights (a $2500 option) is just taken by most people because it looks great. Of talking solely in terms of light output no one would get it)
Seen this in person.
PS. The LED do look cool.