Judging from the dpreview reviews, d90 iso is quite a disappointment, although with high expansion from 100-6400, the iso from 100-1600 is very similar to the performance of 450D, with 3200 barely good for the grains.
From other forums, D90 users has also made some comments that the auto white balance in indoor lighting is rather inaccurate when shooting jpgs.
D300 still win hands down in terms of ISO performance, and also the good AF points, accuracy, making it one of the best aps grade camera, in most ways, way better than the canon 40D, (waiting for 50D reviews).
However D90 still is one good camera with the price budget. With average good iso, solid built and additional movie function (although at its infant stage), still prove it as a good consumer dslr.
From other forums, D90 users has also made some comments that the auto white balance in indoor lighting is rather inaccurate when shooting jpgs.
D300 still win hands down in terms of ISO performance, and also the good AF points, accuracy, making it one of the best aps grade camera, in most ways, way better than the canon 40D, (waiting for 50D reviews).
However D90 still is one good camera with the price budget. With average good iso, solid built and additional movie function (although at its infant stage), still prove it as a good consumer dslr.