More songs than ever
The D80 included an essential feature not found in any other DSLR (as I write this). And that's 5 built-in songs you can't listen to because the camera has no speakers.
The new D90 does away with built-in songs, and includes a fully-fledged iPod. This ensures you're never short of a tune, as long as you have your D90 with you. And it's switched on. And you've uploaded some songs to it.
What's more, the lack of speakers was the one thing almost everybody complained about. It was for this reason, and this reason alone, that DPReview spurned the D80, kneecapping it with a dreaded 'Recommended' rating.
That, and the limited choice of music included with the D80.
Sure, Nikon provided a firmware update that allowed us to add more tunes by storing them in the buffer...but that was too little, too late.
Fortunately, Nikon haven't made the same mistake with the D90. They've not only included stereo speakers in the camera itself, but also the necessary cabling for a full Dolby 5.1 surround sound setup. What's more, the D90 is capable of playing movies on the 3 inch LCD via the built-in DVD writer/player found in the second optional battery grip (MB-D90b).
But just before you rush out an get yourself an MB-D90b, you might want to consider the MB-D90c. This version of the grip includes a sub-woofer (fully compatible with the D90's Dolby surround). That's right, the optional MB-D90c allows you to play music with unprecedented levels of fidelity for a consumer-level DSLR.
Let's see Canon top that!