I’ve been using a D300 since it first came out. I made the decision to stick with DX format lenses and workflow a long time ago and the D300 was the best DX Nikon body at the time. Similar to Apple with the iPhone 3G, Nikon added an “s” to the end of their product name and I didn’t think twice.
Obviously the biggest upgrade in the new D300s is the capability to shoot 720p video at 24p. A lot of people are making a big deal about the added feature, but I’m really not drinking the cool aid. The video feature is a novelty. In fact I’m considering returning the darn camera. Not strictly because of the finicky video, but also because Aperture doesn’t support RAW processing for the D300s which I find very odd considering the processor is almost identical to that of the D300 which is supported. I can easily over come the latter issue by simply using Lightroom instead. So now I have the choice of keeping my D300s and selling my old D300 or dumping both and getting a D700 😉