Nikon 500mm f/4 VR or ?

Paul B Jones wrote:

Ray, I do miss f/4, but my confidence in the higher ISOs on the Canon 1D bodies is growing (ISO 1600 is the new ISO 400), the IS (VR) on the new lenses is superb and at dawn and dusk I am more likely to use support (mono/tripod) so it isn't crippling my low light shooting. I would think it would be exactly the same with the Nikon 800.

Happy photography,

--
Paul B Jones
http://www.flickr.com/photos/paulbjones/