Which to PreOrder the 500mm F4L II or the 600mm F4L II, bird and wildlife advice wanted

[HDNitehawk]

Rick...apparently you have some pull...

http://www.the-digital-picture.com/N...aspx?News=1918

I am on Canon's most valued customers list....

But really, the biggest spreader of Canon Rumors seems to be Canon themselves. We shall see in April.