Share 'Nikon D300 -or- Canon 40D'

I am seriously considering taking the plunge and finally getting the pro digital setup I have wanting... a big incentive is getting a change to shoot with a pro photographer who is willing to take me under his wing and show me the ropes!!! He does really good journalistic wedding photography and portraiture... something I'd like to get into again. For me it's between the following two setup: Ni…