IS it worth considering buying Nikon D80 at price point of $640 body only?

I want to make dicissions between Nikon D40 and Canon EOS450D/500D at the same price point. I want to learn photography and like to use all options manually to make difference. I am worried which one to buy among these since I would be making some collections of lens I need to decide among both companies... show more I want to make dicissions between Nikon D40 and Canon EOS450D/500D at the same price point.

I want to learn photography and like to use all options manually to make difference.

I am worried which one to buy among these since I would be making some collections of lens I need to decide among both companies before I stick to one company..
And also need to know which lens would best suit if the choice is Nikon D80.
Update: Sorry I was comparing between Nikon D80 or Canon 450D/500D.....
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