I treated myself to a D80 two months ago after using a Minolta Dimage for quite some time. I spent some time researching and I did go to a shop and check out various contenders before I made my purchase.
I chose the D80 because I got a good deal just about the time that the D90 was released. I didn't feel that I wanted the video capability that comes with the D90, which would be very useful to some but would count as unnecessary weight for me.
The extra money saved was put towards a 70-300mm VR lens which despite hearing some fairly poor reviews, I am very pleased with.
I could always do with more zoom....but I rather suspect that this is a factor for many who love to take bird photographs
So far, I am really pleased with my choice.