Upload & Sell: Off
So I ask again: What is the upgrade path for the D300 user?
1. Keep what you have and wait another year or two and see if a D400 comes out. Nothing wrong with this, after all the D300 is a damn fine camera.
2. Upgrade to the D600 – Seems that this is what Nikon wants you to do.
3. Take a serious look at the D7100, it has a lot to offer for a DX camera
4. Take a look at the D800, or perhaps other Nikon or Canon cameras.
I too was/maybe still waiting for D400. My responses for your questions:
1. No. I need more resolution.
2. D600 is not an upgrade, it's a sideways move with a lot of compromises. For wildlife, it's a downgrade.
3. I've had a D7100 for a week now. I love it, it's a great camera. Fast AF, shoots clean at ISO 2000, syncs at 1/250s, probably Nikon's best wildlife camera right now.
4. If you often shoot weddings or do a lot of night work using ambient light, a refurb D800 is an option. Definitely not a real replacement for D300 though. Don't forget to add the cost of lenses in your calculation.
I bought the D7100. It has great weather sealing, good value for the money, very sharp images, same AF system as the D4. It's only weakness is a low buffer. If a D400 does appear, I can simply buy one and sell the d7100. Easy enough, right? In the meantime the d7100 is doing what I need at a price I will pay. Of your listed options above, the one I'm least likely to do is #2. It has all of the drawbacks of the d7000 but with a high price tag.
Kent in SD