Nikon Olympus Sony

Nikon Olympus Sony
New to dSLR, which one??? Nikon, Sony, Canon, Olympus?

Okay, I have looked around a bit, and i have found the following cameras;
Nikon D80,Nikon D60,Sony Alpha DSLR-A350,Canon Eos 450D Rebel Xsi,Rebel Xti,Sony A200 ,Olympus E-420 or Olympus E-520,

I was wondering if there are any in the list i shouldn’t get, or definatly should and which ones are better than one another, and maybe which one is the best. I am new to SLRs and am giving myself a 500-1000 USD range, i have no idea about optics, but any help would be appreciated. Also any recommendations, that are not on my list will be greatly welcomed

Thanks

I would recommend Nikon D90 it handles high ISO levels very well.

http://deadsailorproductions.blogspot.com/

Shutter sounds: Nikon D3000, Olympus E-520 & Sony A330