There are still a few features a Pro >may wish that are not in the D7000. Two of the top of my head >would be the separation of the shutter release priority from >the focus mode and more user banks. As to image quality, well >it may matter to some, but not so much for others. Not having >used a D300 I guess I am not qualified to say really. > >Pete >
You can decouple the shutter from the focus mode on the D7000 as you could on the D90. You simply assign the AE/AF Lock button to control focus. Most D90 users I know use this method as it works great.
As for user banks it depends what you mean. The D300/300s has limited shooting and custom setting banks - but the D7000 is the only Nikon with a true settings bank (allows you to save both shooting and custom settings in one bank and it accessible via the control dial).