I've seen this question asked before and read through the responses. I understand the technical differences between each of the cameras. My question is more related to the different lenses available for the camera.
I currently on the D60 and have no issues using it. My only problem is finding lenses that have the autofocus functionality built-in. Yes they are out there but they seem to be more expensive then regular lenses with similar specs that would work with the D90 or D300s.
I'm going to be taking more wildlife and portrait shots within the upcoming year so either way I will need to purchase at least 2 new lenses. My question for the forum is this:
Upgrade to the D90 or D300s now in hopes of saving money on the lenses or keep my D60 and put out for the more expensive lenses? I would be looking at a decent telephoto lens and a portrait lens. Thoughts on Sigma/Tamron versus Nikon?