IMO.. it's not really viable to buy a D90 now or in the future if you're holding a D80.. in fact the prices of Camera bodies always drop quite quickly.. In the short run you might feel great about having a D90 which has better tech specs than D80, but in the long run, as the value drops, you'll feel the same way as the time when you're holding that D80 u once had. So I suggest, be patient.. go for something that's better like D300 or even D700. D80 is still a good camera as of now.