if your top is 1500$ for the camera, and you want a nikon, the d300s is the best you can get.
But, I do guess you want some lenses too?
I'll list the modern nikon dslr's according to how many features they have/how good they are
d300s
d300
d90
d5000
d3000
these are just the current ones, there are old models too ofc but I'd recommend the new ones as they are much better in darker environments.
d3000 is the cheapest, but it also is the only one of these with an older sensor version, which lowers the resolution, but also does a lot
worse when working in a bad light, this is the camera I have and of course you can take good pictures with this one as well

I guess you are in need of some lenses as well? This is quite a nest, I think you should buy either a prime lens(recommended) or a kit lens
(not the best, but it gets you started), until you get a feeling of what you need!
My current lenses are though as follows:
nikon 18-55 VR (not being used at all since I bouht a prime lens)
nikon 35 1.8 (my favorite atm, this one is awesome, and cheap as well!)
tamron 90 2.8 macro (this one is good for portrait, short tele, close-up photos, I just LOVE this lens)
Of course you should base your choice on what kind of photography you want to do

e: If I used any words you didn't understand, don't be afraid to ask, didn't think about my choice of words when writing this text
This post was edited by hestJaevel on Mar 19 2010 02:27am