A night test shot with my new 17-40mm f/4L
This echoes the same shot with my late Tokina 11-16mm f/2.8

http://www.pbase.com/photoburner/image/120789412 >

I think the Tokina came out ahead but IIRC there was just a bit of
haze in the air for that shot and it increased the flare
effect. This time the air was crystal clear.